Sister, Sister star Tia Mowry-Hardrict  rocked a sexy bathingsuit while she frolicked on the beach and celebrated her 39th birthday.  – Baby girl showed off some cleavage in her one piece bathing suit. She finished off the look with waist-length braids . Very sexy.The actress brought in her special day in Maui. Tia who turned 39 on Thursday  also lost 20 pounds and she looks amazing!