Kourtney Kardashian showed off her cellulite-free backside as she stripped down to her thong for a butt massage from Khloe and Jonathan Cheban on the latest episode of the family’s reality TV show.

But not everyone was happy as Kim Kardashian admitted that unflattering bikini pictures from Mexico had seriously impacted her life on Sunday night’s episode of ‘Keeping Up With the Kardashians.’

Kim’s self-doubt and unhappiness at the pictures taken of her on vacation became so great that her sisters were forced to stage a social media intervention and block Kim from reading about herself on her phone.

Dimple free: Kourtney Kardashian proved her butt had no cellulite issues in Sunday's Keeping Up With The Kardashians

Before their intervention though Kourtney showed she had no cellulite problems as she stripped off to her thong and let Khloe and Jonathan Cheban massage her butt with a fascia blaster.

‘You really have no dimples,’ said Khloe admiringly as she and Jonathan rubbed Kourtney down.

‘No cellulite at all,’ said Jonathan.

The episode, entitled ’Cheers To That’ kicked off with Kim and Kendall getting prepped for New York’s Met Gala event.

Help yourself: She stripped off to her thong and let Khloe and Jonathan Cheban massage her butt with a fascia blaster

Nice butt: ‘You really have no dimples,’ said Khloe admiringly as she and Jonathan rubbed Kourtney down

Not weird at all: ‘No cellulite at all,’ said Jonathan

Kendall asked designers to cover up her backside in a revealing dress and Khloe urged her to keep showing it off.

‘You have the cutest little butt I have ever seen in my life. If I had your body I would be walking around in that no s**t to give, I am just perfect,’ Khloe told her younger sibling.

‘Rock out with your c**k out.’

Kim told the cameras she had always dreamed of going to the Met Gala as she told designers she ‘wants to be cellulite-proof.’

'Knowing that all eyes are on you when you walk up those stairs and that within moments people can be so quick to criticize and say whatever is really intimidating,’ said Kim.

In case you get hit by a bus: Luckily Kourtney just so happened to have a thong on

Take that all day: She seemed delighted at her butt reviews

Bum note: Meanwhile Kim fretted about bikini shots of her on vacation in Mexico - which weren't shown in the episode

‘It is super intimidating,’ agreed Kendall.

Back in Los Angeles Kris told Khloe that she had ‘got bamboozled’ by her daughter moving to Cleveland, where boyfriend Tristan Thompson plays in the NBA.

‘When you said you were going to Cleveland you made it sound like you were going for the weekend, but you have kind of gone to Cleveland for six months. It sucks,’ her mother told her.

Khloe told her she went back and forth between Los Angeles and Cleveland but agreed it ‘sucked for everyone.’

Rock out with c**k out: Ahead of the Met Gala Kendall asked designers to cover up her backside in a revealing dress and Khloe urged her to keep showing it off

Wet: In the van on the way to the Met Gala Kim admitted she was nervous as she wiped sweat off her body

In the van on the way to the Met Gala Kim admitted she was nervous as she wiped sweat off her body.

‘Just do this f***ing carpet and get the f**k out of here,’ she told her team as they blowdried her dress and blew a fuse in the van.

‘I’m literally going to s**t my f***ing pants,’ Kim told them as they pulled up to the event as they did last minute touch-up.

‘I was about tho throw up,’ Kim told the cameras before she walked the red carpet.

Grim: ‘I’m literally going to s**t my f***ing pants,’ Kim told them as they pulled up to the event as they did last minute touch-up

Puke: ‘I was about tho throw up,’ Kim told the cameras before she walked the red carpet

In Los Angeles Khloe brought up Kourtney’s dating life for the cameras as her sister organized a birthday surprise.

’She has been back out on the dating scene. I have never seen her so giddy in all my life, it is really cute,’ said Khloe.

As Kourtney wrapped a gift, including a hotel room key, for her new man, pal Jonathan Cheban told her: ‘Just be fun. You’re so f**king weird about it.’

‘I know a little about this guy but I’m not gonna ask a lot of questions because she’s super awkward,’ added Khloe.

‘She will like shut down. Don’t ask, don’t tell policy.’

Bulling: The family then got together for Mexican food and Kim again brought up the Mexico pictures that she hated so much

Not happy: ‘You know what, honestly, that Mexico trip really f**ked me up,’ Kim admitted to the group

The family then got together for Mexican food and Kim again brought up the Mexico pictures that she hated so much.

Jonathan told her to make a joke of it when a friend texted Kim about the pictures.

‘She has got a real insecurity problem lately. You need to have a major conversation with her,’ Jonathan told Kris in front of Kim.

‘You know what, honestly, that Mexico trip really f**ked me up,’ Kim admitted to the group.

‘The cellulite?’ asked Kourtney.

‘Yeah,’ Kim told her.

Dating again: Kourtney was giddy about a new man she was seeing

Pressie: As Kourtney wrapped a gift, including a hotel room key, for her new man, pal Jonathan Cheban told her: ‘Just be fun. You’re so f**king weird about it.’

Khloe told the cameras that she hoped that Kim’s appearance at the Met Ball would ‘give her a surge of confidence’ after the Mexico trip.

‘It seems like the Mexico pictures are just never ending and it is making her think about Paris again and the response to her being robbed,’ said Khloe.

‘She was mocked and made fun of for this really traumatic thing that happened to her and that was even more traumatic and now these pictures coming out everyone has another reason to ridicule and mock her, it is one of the few times she has been seen back out and this is how she gets treated and it is not fair and it is really cruel.’

Khloe was then on babysitting duty for Kourtney’s children as she went on a date night, but the next morning Kourtney was coy about it.

Missing: Kris gave Khloe stick for not hanging out with her anymore

Packed: Khloe tried to recruit her mom to for wardrobe cleaning duty

Khloe then told Kris she was clearing her whole schedule so they could spend the week together in Los Angeles but when it came to it Kris was tied up with meetings.

As the girls worked out together, Kim asked Kourtney if she thought she looked ‘a little skinnier’ after three days in a row with a personal trainer.

Kim then got a call from Kanye about her Mexico picture issue and asked him when the story was going to go away.

‘You definitely get thick skin once you have been through it a lot but pictures just keep coming out and they just won’t let it go,’ Kim told the cameras.

‘I know I can handle anything and everything and if I can’t handle it then…’

First world problems: Kim then got a call from Kanye about her Mexico picture issue and asked him when the story was going to go away

Woe: ‘You definitely get thick skin once you have been through it a lot but pictures just keep coming out and they just won’t let it go,’ Kim told the cameras

Tough: ‘I know I can handle anything and everything and if I can’t handle it then…’

Later over salads Kim told Kourtney and Jonathan that she was now ‘freaked out’ and ’nervous’ if anyone even looked at her when she was out in public.

‘It is a full phobia, I freak out about everything,’ he told them as Kourtney urged her to ignore people and to live her life and urged her not to look at stores about herself on the Internet.

Kim then told them she had been shot in another unflattering paparazzi picture that made her ‘look like 500 years old.’

‘That is like my life, but why do i subject myself to being out and being seen? Why don’t I just sit at home? I would rather be at home. I just don’t want any picture.’

On edge: Kim claimed t she was now ‘freaked out’ and ’nervous’ if anyone even looked at her when she was out in public

Cut off: Khloe devised a plan to try and disconnect her from social media and block her own name on her phone

‘Kim is really not over these Mexico pictures and I just feel like this set her back,’ said Kourtney as Khloe agreed their sister was ‘so insecure.’

‘I don’t think anyone should live their life like that,’ said Khloe as Jonathan urged them to try and disconnect her from social media and block her own name on her phone.

Khloe again tried to spend time with Kris, and was left frustrated when her mother had work plans.

‘I am here just for you. I can’t hear the guilt trips any more. The point was for us to be together. I don’t really care that you have stuff to do, but lets not give me s**t then,’ said Khloe.

A fan: Kim revealed she got all her news from the Daily Mail app

Khloe told her mom that she already felt guilty when she was away form the family but that they gave her too much ’s**t’ over it.

‘I do feel guilty about not spending time with you but it was a lesson learned,’ said Kris.

At Khloe’s house she got Kim to help her clean her closet while Kourtney deleted celebrity news apps from Kim’s phone.

‘Kim is not normally this insecure and if she just didn’t have access to social media or stopped looking at the blogs she would start feeling better,’ said Kourtney.

On show: The episode opened with the sisters arriving for the Met Gala

Khloe agreed that they needed to step in an ‘remove that bulls**t’ from her life.’

But Kim caught Kourtney in the act of blocking Kim from seeing Daily Mail Online and TMZ.com.

‘You can never go on these now because it consumes you and affects you,’ said Kourtney.

‘This is the healthiest thing for you, she is not doing it from a malicious place, she is trying to help you,’ explained Khloe.

Fit: Koutrtney was delighted with her new toned shape after spending time with a trainer

Busy: Kris reneged on her promise to spend time with Khloe because she was tied up with meetings

‘I am not like a lunatic,’ said Kim defensively.

‘You have been letting these things get into your soul,’ said Khloe.

‘You need to live your life and be happy. Why do you need to see this nonsense?’ said Kourtney.

‘But I look at them for news too. On the Daily Mail that is how I learn all my news, of what is going on in the world,’ said Kim.

Kim finally came around to her sisters way of thinking.

Sipping: Khloe and Kris then finally managed to spend time together on a wine tasting trip

Lols: They began making prank calls to Los Angeles hotels and cake stores with British accents

‘You are right I need to not let this bother me and not be a thing. I understand that you guys were just trying to help me and that I don’t need this negativity in my life,’ agreed Kim.

Kim then agreed agreed to live with a blocked phone for a few days to see how it went.

Khloe and Kris then finally managed to spend time together and after extensive wine tasting began making prank calls to Los Angeles hotels and cake stores with British accents.

In scenes from the next episode Kourtney is heard discussing Scott Disick’s bad behavior and saying: ‘I don’t want the kids to see him like this.’