She recently revealed that she has been battling depression since falling pregnant.

But Courtney Stodden appeared to be feeling better in her latest Instagram post as she showed off her burgeoning baby bump in a fun video.

The 21-year-old reality TV star - who is expecting her first child with 56-year-old husband Doug Hutchison - looked in a sunny temperament as she sported a bikini, her tummy painted with a smiley face as she danced around next to a pool.

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Bumping along: Courtney Stodden appeared to be embracing her pregnancy and changing body as she posted a video on her Instagram page on Monday, showing off her baby bump

Wearing the skimpy black two-piece, the video started off with her shaking her almost bare derriere shaking as she danced.

The camera then panned around her to reveal her painted bump and very ample chest, almost spilling out the sides of the scant swimwear top.

The pretty blonde model wore her mane loose in a wavy style and she topped off her stylish poolside look with a wide-brimmed hat, to protect herself from the sun's rays.

Along with the sassy little video, she wrote: 'Embracing these insane body changes with a smile lol #pregnant #babybump.'

Proud: Along with the sassy little video, the 21-year-old reality TV star wrote: 'Embracing these insane body changes with a smile lol #pregnant #babybump.'

Twerk it: Wearing the skimpy black two-piece, the video started off with her shaking her almost bare derriere shaking as she danced

Proud: Although she has been experiencing some difficulties at this early stage, Courtney appeared to be happier in the new video

Courtney revealed in mid-May that she was four weeks pregnant, and last week explained that she has been coping with depression since finding out she is expecting.

The star - who shot to fame at the age of just 16 when she married Green Mile actor Doug who was, at the time, 50 - also said her condition is affecting her sleep and eating habits.

She toldUs Weekly: 'I suffer from depression. My depression affects my appetite, sleeping patterns and overall perspective on life

Protected: The pretty blonde model wore her mane loose in a wavy style and she topped off her stylish poolside look with a wide-brimmed hat, to protect herself from the sun's rays

Busty display indeed! She almost popped out of her skimpy bikini top, her ample chest heaving out

'At times, I have severe insomnia and other times I find myself sleeping too much.

'I have feelings of hopelessness but experience many moments of absolute euphoria.'

But Courtney is not alone with her struggles, as between 14 and 23 per cent of pregnant women suffer from prenatal depression according to the American Congress of Obstetricians and Gynecologists.

Struggling: Pregnant Courtney, who shared this morning sickness picture last week, has revealed she is suffering from depression

It emerged on the same day she she shared an unflattering image of herself hunched over a toilet on Instagram, which she captioned: '"When does this end? #firsttrimester #baby #pregnant #morningsickness #notjustinthemornings.'

Her revelation comes only weeks since she confirmed she is having her first baby with her much-older husband, who was slammed by critics when they started their relationship.

It led to Doug being disowned by his family and brought to his once flourishing acting career to an abrupt halt.

Adverse effects: She also admitted she is struggling with insomnia and has problems with her appetite

No walk down the primrose path: Courtney's husband Doug Hutchison was slammed when they first got together - they tied the knot in 2011 when she was 16 and he was 50

But his love for teen bride Courtney was such that the actor swore he would do it all again in a heartbeat.

The couple celebrated their five-year wedding anniversary last weekend by renewing their vows.

There was no visible sign of a bump as the father-to-be kept a protective hand on his wife's stomach while smiling in photographs after the ceremony, which was conducted by their friend Ruba Wilson.

The last five years have been far from a blissful stroll down the primrose path for the couple, and at one point they even separated before reconciling.

Hollywood couple: But they have overcome the critics, not to mention a separation, and renewed their wedding vows at the weekend

Courtney told Us Weekly that she was pregnant a couple of weeks ago, revealing: 'It's a bittersweet time for me right now. I'm dealing with a lot of stress and emotions surrounding life and its ups and downs. Doug and I weren't planning on going public with this so soon. I’m only four weeks along in my pregnancy. But some things are out of your control.'

The controversial couple, who once starred on TV show Couples Therapy, married in 2011 when Courtney was just 16 years old.

They briefly split up in 2013 before getting back together less than a year later and Courtney recently revealed plans to renew their vows on their fifth wedding anniversary on June 21.

She said: 'Our relationship right now is really, really good. We're really strong and we're very happy. We're getting ready to celebrate our fifth wedding anniversary and we're absolutely going to renew our vows for our fifth wedding anniversary. So, yeah, we're doing really, really well!'