The aspiring model, who's actual birthday was June 10, was all smiles as she soaked up the sun wearing a simple white bikini by Bamba Swim featuring a simple bandeau top with matching cheeky bottoms. The two-piece set is currently on sale for $45.50 on bambaswim.com.
She accessorized her beachy look with an on-trend yellow bucket hat and summery beaded necklaces.
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The oldest daughter of The Real Housewives of Beverly Hills star Lisa Rinna and actor Harry Hamlin was joined by a group of friends and her boyfriend, hunky Love Island star Eyal Booker, whom she has been dating since 2019.
Noticeably absent from the birthday getaway was the blonde beauty's younger sister, Amelia Hamlin. The 20-year-old celebrated her own birthday on June 13 with her 38-year-old boyfriend, Scott Disick, in Miami.