The cheeky fashionista is pictured with her jeans around her knees as she leans against a wall, showing off her pink pink underwear.
The star’s friend is seen sitting by her, holding a pair of flowers, which makes a rather confusing set up!
Sharon Osbourne’s middle child has clearly been working hard on her squats at the gym, judging by her pert bottom.
Fans didn’t miss the star’s toned behind either, with one fan commenting on the photo: ‘You're so teeny! Amazing! U look great. Congrats again!! (sic).’
Another follower pledged to use Kelly is booty-inspiration, writing: ‘I want your butt!’
Could Kelly be trying to give pal Kim Kardashian a run for her money in the booty stakes?
Kelly has struggled with confidence issues when it comes to her weight, but 29-year-old now feels comfortable in her skin.
She told a woman’s monthly last year: ‘We don’t recognize our own beauty because we’re too busy comparing ourselves to other people. No, we are not all Gisele Bündchen; we’re not all Beyoncé.’
‘Even now I don't consider myself skinny… But I have put a lot of hard work into my body over the years, and in the process, I've really learned to love myself.’