(Photo by Toby Canham/Getty Images)

Just 10 weeks after birthing birth to a baby boy named Tennessee, actress Reese Witherspoon is back to looking fit and fabulous.

The Oscar-winner hit the red carpet last night at the Children’s Defense Fund’s Beat The Odds gala in a tight, lacy cocktail dress by Elie Saab and Christian Louboutin heels.

No word on how much weight she lost, but she’s looking great after giving birth to her third baby. Reese has a 13-year old daughter, Ava, and 9-year old son Deacon with ex-hubby Ryan Phillipe; 10-week old son Tennessee is her first baby with husband Jim Toth.