Kim Kardashian wore a bikini  recently to stroll along the sand in Punta Mita, Mexico, with her two-piece-clad sister Kourtney and their respective boyfriends, Kris Humphries and Scott Disick. New Jersey Nets basketball star Kris Humphries  showed off his strength by scooping Kim up into his arms during their extremely PDA-filled afternoon on the beach! The family vacation was a belated birthday getaway for Kourtney, who celebrated her 32nd on April 18. The trip gave the busy sisters time to relax and enjoy a break from their hectic schedules. Kourtney and Scott's son, Mason, was able to go along for the fun, and he was spotted soaking up the sun like the rest of the family during their stay south of the border. Kim's been keeping busy recently with her endorsement deals and strict fitness routine, all while planning a move to the East Coast in order to be closer to Kris. The Kardashian girls have plans for a second season of Kourtney & Kim Take New York, which will certainly help Kim spend more time with Kris. Kim's already back to work following her sunny excursion, and she's prepping for an appearance at Las Vegas's Fashion Show Mall to promote her signature fragrance today.