Justin Bartha & Joshua Jackson Play Poolside With January Jones’ Baby Boy (PHOTOS)

January and Xander!
'Mad Men' beauty spotted with her baby boy in LA.
January Jones may be a single mom, but her baby boy Xander has some famous male influences in his life. The X-Men mom, 34, and her son lounged poolside in Topanga Canyon, Calif. on Sunday along with January’s famous friends Justin Bartha, Joshua Jackson and Diane Kruger (not pictured).

Both The Hangover actor, 33, and Dawson’s Creek star, 33, played in the pool with the baby boy, who was dressed in a pair of adorable swimtrunks. Meanwhile, Mad Men beauty January just dipped her legs in the water and shielded the sun with a hat and sundress.

The celebrity crew, which also included one of January’s gal pals and an adorable pooch, were all smiles as they played with the baby.

January, who has yet to reveal the father of Xander, has opened up about being a new mom.

“I am enjoying [motherhood.] I adore it,” she told Access Hollywood this past March. “[Xander] is awesome.”

Click the pics for more poolside shots of the celebrity friends and January’s adorable son.