From the moment we knew about her latest album, Revival, Selena Gomez has been showing everyone just how much she's grown up. And she turned the hotness up another notch at the 2015 American Music Awards.

She quickly turned heads when she stepped onto the red carpet in a red sequined number that may have covered her up in the front. However the low dip in the back not only showed off more skin than we expected but also showed us that she's fine going bra-free. And once she hit the stage to perform "Same Old Love," her black leotard and bedazzled sheer overlay was dark yet sultry. The silk jacket she wore over it looked more like a robe that you wear in the boudoir.

See the gallery of Selena's looks — on and off the stage — at the AMAs above.

Check out more looks from the 2015 American Music Awards: