This Young Celebrity Mom Went Makeup-Free! Who Is She? (PHOTOS)

The gorgeous new mom — whose son, Luca Cruz, is seven months old — posed for a quick photo before bed, tweeting, “Clean face, cozy in bed! Kept my bun in from dinner … they say in Texas the higher the hair the closer to god ;) hope it works...”

Aww, we love her natural look! And such a hard-working mama deserves to kick back and relax at night.

Did you know it was Hilary Duff? Tell us below, and then click here to play more “Guess Who?”