This is the best she's ever looked! Simply stunning!

Khloe Kardashian is the new face of Protein World, and posed for a jazzercise-themed photoshoot to promote the product. The reality star has undergone a drastic body transformation in recent years, which is probably why the company chose to give her the endorsement deal.

"Training can be hard sometimes, remember… if you fall down and if you mess up on your diet… don't stay down. You get back up and you say: 'OK tomorrow I'm going to work out a little bit harder.' We all have those days, but it's nothing to completely fall off track about," she explained of her decision to get involved with Protein World.

"Let that just motivate you to be that much better the following day. You have to remember to set realistic goals. Things that you will actually hit and start slowly. But reward yourself when you hit that goal… then set a new goal," she added.

Boyfriend Tristan Thompson is one lucky dude!