The actress celebrated her 50th birthday June 15 by looking fit and gorgeous on the beach in Turks and Caicos, where she vacationed with her boyfriend Johnny McDaid.
The Cougar Town star seems to have been keeping up with her workouts – the actress appeared not only toned, but also confident in her teeny black bikini.
Of course, her calm smile could be thanks to her Snow Patrol rocker beau, 37, who recently collaborated with the actress on the film Just Before I Go, which Cox directed.
McDaid contributed to the soundtrack, and the pair had a blast working together. "I couldn't be happier," Cox told PEOPLE. "It really elevates the film in so many ways."