Most stars leave after Strictly Come Dancing a couple of stone lighter thanks to the punishing rehearsal schedule.
But it seems that Abbey Clancy is the exception to the rule as she has actually PUT ON weight since joining the BBC show, according to Tess Daly.
The presenter exclusively told us that the model is the only contestant in Strictly history to be piling on the pounds instead of losing them.
[ Strictly's Bruno Tonioli falls off his chair while laughing ]
[ Tess Daly talks 8 Out Of 10 Cats and Disney princesses ]
She said: ''Funnily enough, the gorgeous Abbey Clancy is possibly the only star we have EVER had take part who has actually put weight ON!''
And it seems that Abbey has become so muscly that her usual uniform of skinny jeans and blazer isn't working anymore.
Tess added: ''She told me that all the training has made her lovely long legs a LOT more muscular – even to the point where she can't get into her usual skinny jeans!''
Although the star looks as svelte as ever to us, it seems that the daily rehearsals have been building up her muscles at lightening quick speed.
The WAG, who has impressed the judges every week with her prowess on the dancefloor, recently admitted that she found it a struggle to put on weight and that her skinny frame wasn't down to working out.
She told us: ''It’s just down to working hard and having a heavy child. That’s good for the upper body strength.
''I think just having a two-day rehearsal is fun and you want to do it but you don’t think of it as exercise.''
You definitely need to eat more and look after yourself and have a lot of sleep if you can, because it is hard.”
Fellow contestant Julian McDonald, 42, also leapt to Abbey’s defence, highlighting her eating habits.
He said: “She eats like a horse by the way. I was watching her eating her lunch and I was like ‘can you really eat all that?’’ She said 'I can’t put on weight.’”
Backing up Julian’s claims, Abbey added: “I’ve been trying desperately to do it.”
We bet she's over-the-moon right about now, then!