It must be hard to maintain a super fit body all the time...
But I am tired of her whole look to be honest, the too tanned body & face, always has ridiculous cat ears on, a fake ponytail, and cheesy looking heels she can't walk in. If she's going to dress like that, they should at least make it look expensive for all the money she makes.
Ariana is a petite frame and I dont think she is "super fit" she does have perfect shape for her body. Nothing a gym and 80% good eating cant do to keep up her shape.