Selena Gomez recently rang in her 30th birthday with a celebration to remember. As for how she honoured her special day, a source tells that the event was a ‘formal party’ held at a private home. "Everyone was in gowns and dressed up," the source noted. "There were red roses lining the entry way and throughout the party." The party featured cups that said Selena's 30th, a photo booth and a cake that paid homage to Selena's time on the show Barney & Friends. A source said, "She was really happy and was partying with her friends all night." Camila Cabello was also there for the special gathering. The birthday girl had the perfect fit for the special occasion. In a photo shared post-party, Selena Gomez rocked a pink Versace gown paired with hoop earrings. But that wasn't her only look of the night. Selena's friend shared a few snaps to Instagram featuring the singer in a sequin halter dress lined with feathers. She also took to Instagram with a message noting that her "twenties were a journey through good, hard and beautiful moments that I will never forget."