She's certainly not one for holding back her opinions - previously finding herself in a spat with Khloe Kardashian.

And on Monday it looked as if Amy Schumer was calling out Taylor Swift, as she shared an Instagram post with a sassy caption during the Grammys, on which the 25-year-old hitmaker was prominently featured.

Amy, 34, shared a playful beach photo captioned: 'Taylor that's not a thigh gap. This is a thigh gap,' as the 25-year-old songstress could be seen at the Grammys wearing a revealing skirt that highlighted her slim pins.

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'That's not a thigh gap' Amy Schumer appeared to be calling out Taylor Swift with this Instagram post, which she shared on Monday

Looking trim: The same day the comedian posted her sassy Instagram, Taylor could be seen showing off her lithe legs while attending the Grammy Awards in Los Angeles

The caption could also have been directed at the star's performance attire, as a shimmery, skintight bodysuit also put her trim figure on display.

Amy's snap showed the Comedy Central star looking blissful as she hopped into the air, her arms raised high and legs kicked out to each side.

She could be seen jumping in the air behind a friend in a black bathingsuit, who looked to be fellow comedian Bridget Everett.

The Inside Amy Schumer star's caption upset some fans, with them leaving comments on her photo defending Taylor as they criticized Amy for her judgments on body image, as website refinery29 pointed out.

See Taylor Swift updates as Amy Schumer seems to call out Taylor Swift over thigh gap

Daring: The blonde beauty flashed a smile as she posed beside pal Selena Gomez in the revealing, Atelier Versace two-piece ensemble

Facing criticism: Amy faced some backlash for her caption, with one person commenting, in defense of Taylor: '[A]n exfan. you should be able to celebrate yourselves and your bodies without putting down those with different body shapes'

'[A]n exfan. you should be able to celebrate yourselves and your bodies without putting down those with different body shapes,' one person wrote.

Another commented: '[T]hat's rude. Can't we get rid of body shaming? You saying that is like a person calling you fat, and I'm sure you wouldn't like it. It's people like you and Hollywood standards that keep girls from feeling comfortable in their own skin.'

A third jokingly suggested: 'You're gonna get a song written about you now.'

A common theme: Amy's close friend, comedian Nikki Glaser has previously spoken about Taylor's thin frame, saying 'You have to have a thigh gap to hang with her' (pictured performing at the Grammys on Monday)

Her squad: And Amy may have already been on Taylor's bad side, as she performed alongside Amy Poehler (R) and Tina Fey (center) in a spoof of the star's wildly popular music video for Bad Blood in December

Previously, comedian Nikki Glaser, referred to as Amy's BFF, commented on Taylor's thigh gap as well, while talking to Us Weekly.

'She’s too skinny, it bothers me,' The Not Safe with Nikki Glaser star said, adding: 'You have to have a thigh gap to hang with her.'

And it is possible Amy was not already on the best terms with Taylor, as she appeared in a December Saturday Night Live skit mocking her infamous 'squad' of model and actress friends, as well as her Bad Blood music video.

The video also happened to star Tina Fey and Amy Poehler, who Taylor famously is not fond of, following a joke they made about her while hosting the 2013 Golden Globes.

In hot water: The Comedy Central star has also previously upset Khloe Kardashian, as she joked about her incredible weight loss while appearing on Saturday Night Live

Playing off of her infamous romantic history, the stars joked about her staying away from Michael J. Fox's son (who was that year's Mr. Golden Globe) to which Taylor later shared her anger in an interview with Vanity Fair.

Speaking with the magazine in March 2013, the Grammy winner said: 'There's a special place in hell for women who don't support other women.'

Meanwhile, Amy has come under fire for similar comments before, after joking in October about Khloe Kardashian's weight loss.

Her transformation: The Kocktails with Khloe star has lost at least 35 pounds, and has documented the healthy journey on her social media accounts and website/app

'We used to have Khloe,' she said, of the Keeping Up with the Kardashians star who has lost 35 pounds, while documenting the journey on social media.

'Khloe was ours, right? Whenever there’s a group of women, you identify with one of them, right? Khloe, she lost half her body weight. She lost a Kendall [Jenner], and we have nothing.'

The Kocktails with Khloe star quickly responded, writing: 'No need 2 tear down others just 2 make urself feel bigger. It actually makes you quite small. I’m on a healthy journey. I don’t care 4 the hate.'

Her apology: After Khloe took to Twitter to express her frustration over Amy's jokes, the Trainwreck star apologized, assuring her she had 'nothing but love' for the Kardashians

However, Amy assured the reality star that she meant no harm, later tweeting: 'Nothing but love for that family. I like idea of sending women the message to be happy in their own skin. #peace.'