You may have noticed the dramatic transformation Gogglebox's Scarlett Moffatt has undergone recently.
Scarlett has revealed that by overhauling her unhealthy diet and hitting the gym, she's lost over two stone.
However, she's now revealed another reason for her transformation: She's releasing a fitness DVD.
Scarlett announced the news on Instagram, sharing this photo of the DVD's cover.
But celebrity fitness DVDs have a controversial history.
In many cases, the celebrities haven't just followed the DVD workouts, but also dedicated diet and fitness plans created by professionals. Numerous celebrities have spoken publicly about how they put the weight back on after the DVD was released because they weren't being held to such a strict regime – and one, EastEnders' Natalie Cassidy, said the fitness DVD industry is a "farce" and that she came close to developing an eating disorder as a result.