Together again and looking better than ever: Selena Gomez [1] and Demi Lovato [2]. The two singers attended Billboard's 10th annual Women in Music ceremony in New York City on Dec. 11, and we seriously don't know who impressed us more with her gorgeous outfit and impeccable beauty look. Selena looked stunning in a sweet flapper-inspired, shimmery dress [3] with a black coat and severe middle part on her hair, while Demi continued her badass fashion year [4] in a low-cut black pantsuit, showing off her incredible bold brows by wearing her bob pushed back.

Selena and Demi, who sadly didn't snap a photo together, were at the music show to receive the chart topper honor and rulebreaker award, respectively. Both stars had an eventful year with new albums, sexier looks, and performances on the most important stages, including the Victoria's Secret Fashion Show [5] for the "Revival" singer and the American Music Awards [6] for the "Confident" crooner. They even had a sweet reunion on Instagram [7], declaring their friendship to be long-lasting. Keep scrolling to see more photos of Selena and Demi on the red carpet and inside the show, and then check out their sweetest friendship moments [8] through the years and find out why we think this is the year Selena became a woman [9].