Celebrity Celebrity Moms Kourtney Kardashian Shows Off Her Post-Baby Body in a Cutout Bikini By Kelsey Glein Kelsey Glein Twitter Kelsey Glein is a Seattle-based writer and editor who covers all things fashion, beauty, and pop culture. She was previously the Digital Editor of InStyle and is currently a Social Media Manager at a cosmetics company. InStyle's editorial guidelines Updated on May 11, 2015 @ 06:00PM Pin Share Tweet Email Photo: Splash News Kourtney Kardashian is one hot mama! The star was spotted on vacation with her family in Mexico over the weekend, where she showed off her fit figure in a black cutout swimsuit. The mother-of-three completed her beach-ready look with a chic Panama hat and neutral sunnies. The Keeping Up With the Kardashians star made the trip down south to celebrate Mother's Day, and was accompanied by boyfriend Scott Disick along with their three children Mason, 5, Penelope, 2, and Reign, 5 months. What Is Kourtney Kardashian's Breakfast Obsession? Check out more snaps from the Kardashian-Disick vacation below. PHOTOS: See More Celebrity Bikini Snaps