Christina Aguilera turned heads in a revealing red dress at the Breakthrough Prize Awards Ceremony Hosted By Seth MacFarlane at NASA Ames Research Center on Sunday.

The new mom, who gave birth to her second child, daughter Summer Rain, in August, wowed in a low-cut Rubin Singer dress as she posed with her fiance Matthew Rutler at the event. The 33-year-old has been taking a break from the spotlight, but plans to return as a mentor to “The Voice” next season. She’s also set to release new music:

New baby. New Music. New season of @NBCtheVoice. Bringing #FireAndFun to all, can’t wait for 2015!

— Christina Aguilera (@xtina) October 15, 2014

See Christina’s gorgeous look below: