Source: Getty Olandria Carthen is a Gemini, obviously. The Bama Barbie is smart, gorgeous, a social butterfly and the muse of fashion designers around the world. As the charismatic reality TV personality, who shot to stardom on season seven of ‘Love Island,’ turned 28 on May 29 and we can’t help but admire how much she’s accomplished in the last year. But it all makes sense, as the twins of the zodiac the mahogany beauty embodies the core attrib…