Kylie Jenner's fans are concerned she's had botox.
Kylie Jenner
The 19-year-old reality star shared a selfie in which she promoted a teeth whitening kit, but it was her incredibly smooth skin that attracted attention, rather than her gleaming gnashers.
She wrote alongside the picture: "Smiling with @hismileteeth #ad #hismile #teethwhitening."
However, one of her 75.3 million followers wrote: "She can't even smile anymore."
Another asked: "Is it me or is Kylie starting to have that plastic surgery face?"
A third fan then replied: "I totally agree it's like woah girl slow down."
The 'Keeping Up With the Kardashians' star previously admitted to having fillers in her lips, but she admits she went too far in her quest for a plumper pout.
Speaking in an interview with her half-sister Kim Kardashian West in Allure magazine, she said: "Well, I definitely made my lips a little too big at one point."
The newly-blonde beauty - who has her own line of lipsticks, glosses and liners - believes she was just one step away from ending up on the US reality TV series 'Botched', which sees doctors attempt to fix procedures gone wrong.
She explained: "I got excited and felt like I needed to do a lot. And then you guys were like, 'Kylie, you need to chill.' And then I had to go back and have it fixed, and it was a crazy process. Thank God I didn't end up on 'Botched'."
The 'Keeping Up With the Kardashians' star was forced to reveal she has had temporary lip injections on an episode of her family's E! reality TV show last May after the #KylieJennerChallenge, which saw young fans attempt to mimic her pouty look by sucking on the rim of a cup, went viral.
Her mother Kris Jenner didn't give Kylie, who was 17 at the time of the procedure, permission to get lip fillers and was fuming when she discovered she'd gone behind her back.
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