You won't believe how Demi detoxes, how Cameron zaps a zit, or what Sandra puts on her face.
And Kate Upton is right alongside her.
Anything to get abs like hers.
Some of these will surprise you!
Rihanna isn't the only celeb who isn't thrilled about her haircut.
See her metamorphosis from fresh-faced teen model to megastar.
Maybe fellow Artistic Director Justin Timberlake can give her some pointers.
Wait until you see Mila Kunis' "before" photo.