Cheryl's teeth look pretty much the same, but her MOUTH looks different. Defo had botox/fillers. She does look OK, but a bit 'fake.'
And I think she is just 'Cheryl' now, coz even SHE loses track of what her surname is. 
As a few people have said, it's almost always the women with men 7 years or more younger than them who pump their faces with crap to try and stay looking young.
Sad thing is, many women in their TWENTIES are doing it now. Lady Gaga looks bizarre now, Cheryl has had stuff done, Ellie Goulding, The Kardashians and The Jenners, Tulisa, Naya Rivera (Glee,) Jessica Simpson, Kaley Cuoco (Big Bang theory,)
The sad thing is that they rarely look better, and they never look younger. Indeed, I have seen some women in their mid 30's, who have been having fillers and botox and procedures since their mid 20's, and by their mid 30's, they look 5 to 8 years older. They sometimes look very odd too.
Some middle aged (and slightly older,) female celebs look bizarre too.. Nicole Kidman, Olivia Newton John, Courtney Cox, Melanie Griffith, Meg Ryan, Cher, Brooke Shields, Courtney Love, Lulu, and many more. All women who were really pretty, and now look sooooo odd.
Madonna, Vicky Beckham, Kylie Minogue, and Jamie Lee Curtis have had stuff done too, but they look pretty OK. Occasionally a bit odd if it has just been done, but OK most of the time.
Sad really. I wonder if they see themselves in the media and think 'SHIT I look ugly and saggy!' (They don't obvs!) And then they go under the knife. Or some nasty cunt says something (like a reporter, or a twitter troll,) and it drives them to surgery.
Linda Robson recently had a nasty comment - someone said her neck looks like a woman's saggy cunt. Nice eh?! 
And she is seriously considering going under the knife now. 1000's of nice comments from 1000's of fans for many years, and this ONE comment has really got to her. So sad.....