Christina Aguilera Post Pregnancy Pics- X-Tina Sheds Baby Bump 2-Weeks After Giving Birth To Summer Rain

Christina Aguilera might have just given birth to her baby girl Summer Rain two weeks ago, but the star is looking just as gorgeous as ever, as she steps out for the first time since her pregnancy. The Voice coach was all smiles as she hung out with her son Max, 6, and her ex-husband and Max's father Jordan Bratman, as they enjoyed a back-to-school picnic together.

The 33-year-old mother of two wore a black and grey stripped maxi dress that she paired with a black jacket, oversized sunglasses, and gold sandals, as she enjoyed a nice day in the Santa Monica with her family and friends. Bratman's parents also joined the two on the picnic.

"They seemed really cool with one another," an insider for E! News revealed of Christina and her ex Jordan.

Click here to see the pictures of Christina post baby bump.

A source tells E! News, that at the picnic Christina spend a lot of time talking to other parents and their children and that she was very friendly to everyone.

"[Christina] was very friendly with anyone who came up to her," the insider revealed. "She interacted with all the other kids and parents. She was glowing, she looked really happy."

Aguilera welcomed her new daughter earlier this month with her fiancés Matthew Rutler who couldn't be happier about the newest addition to the family. Mstars recently reported that Max is so excited about being a big brother to Summer.

"Max is really excited about being a big brother and they constantly have tried to make him feel included," a friend of Xtina's explained. "He's excited and not too jealous and is already helping mommy out. All is going great!"