Sun’s out, buns out. Kylie Jenner’s BFF, Stassie Karanikolaou , showed off her new butt in a red bikini after she got a Brazilian butt lift (BBL) reduction. According to photos obtained by Page Six, the influencer showed off her smaller backside as she enjoyed time at Miami Beach on April 29. Kylie Jenner’s BFF, Stassie Karanikolaou (seen above), showed off her new butt after she got a Brazilian butt lift (BBL) reduction. Pichichipixx / SplashNews.com According to photos obtained by Page Six, the influencer showed off her smaller backside as she enjoyed time at Miami Beach on April 29 (as seen above). Pichichipixx / SplashNews.com She rocked a red bikini (as seen above). Pichichipixx / SplashNews.com The beach outing comes nearly seven months after Karanikolaou, 28, revealed she was in a “surgery recovery center” following an “ass reduction.” “I’m so comfortable eating chicken tenders and French fries.…