Kim Kardashian hosts sister Kourtney's 31st birthday in Las Vegas
At MGM's Wet Republic on Saturday, the women partied with locals, sang "Happy Birthday to You" and lounged in their swanky Bombay Sapphire private cabana with raspberry Collins cocktails.
Kourtney recently graced the cover of Life & Style magazine, chatting about how she earned back her pre-baby body back after delivering Mason, now 4 months old.
She said she's limited her caffeine intake to a single shot of espresso per day and cut out sugars.
"I was eating a lot of dried fruit, and I didn't realize how much sugar that added. And now I'll eat raw almonds instead of salted ones," she told the mag.
Her exercise regime is cardio-heavy, with lots of running and squats to keep her booty "up there."
"Frozen yogurt tastes so chemically to me because I've been eating salads and salmon and chicken," she said of her post-baby cravings.
-- Matt Donnelly
Photo: Kim, Kourtney and Khloe Kardashian, from left, pose with the birthday girl's three-tiered Bombay Sapphire cake. Credit: Handout