Bebe Rexha is living her best life! The pop star, 34, took to Instagram on Saturday, July 20, to share a slew of snaps from her vacation in Greece, including a few of her lying topless in the sun. “Mykonos for the first time ever. Thank you @soulaliakou @cavotagoomykonos for taking such good care of us. Can’t wait to be back,” Rexha captioned the lineup of shots from her getaway. “I WON’T BE THINKING ABOUT ANYTHING ELSE BUT THIS TODAY 🥵,” one person penned in the comments section. “Body is bodying,” a second social media user chimed in. “You’re gorgeous Bebe!!! ❤️❤️🔥,” a third gushed over the …