Eat your heart out, LD!

Kourtney Kardashian has never looked better, and she proved it by putting her revenge body on display in a tight burgundy dress at the studio in LA yesterday. It seems like we blinked and the mother-of-three suddenly had the hottest bod of the K clan. We have a feeling fitness fanatic sister Khloe shared some diet and workout tips with her!

We all know that the "breakup diet" is really effective, though. Ever since splitting with Scott Disick this past summer, the brunette bombshell has been making more of an effort to sex up her image and tone up her physique.

She doesn't strike us as the type to jump right back into the dating pool, but The Lord should probably be worried anyways. After all, she's the one with all the money and fame, so it's not going to take her long to find a new love once she decides that's what she wants. Scott, meanwhile, is going to have a tough time finding a chick that turns a blind eye to cheating and wild partying.

We're sensing a bikini photo shoot coming on...