Selena Gomez / Instagram
Selena Gomez in a bikini selfie
Selena Gomez posed for this bikini-in-a-mirror selfie in 2015, then posted it to her Instagram page. Selena Gomez was born in 1992, so she turned 23 the year she took this photo. 2015 was also the year she released her second studio album, Revival, and appeared as herself in the film The Big Short.