Fergie's Sister Gives Birth To Baby Boy

Fergie and sister Dana Ferguson at Voli Light Vodkas celebrates the launch of Don-A-Matrix Training

Five-month-old Axl Jack now has a playmate -- his newborn cousin, Jagger

Fergie’s sister, Dana Ferguson, has welcomed a baby boy and given him a rockstar name just like his primo. Fergie and Josh Duhamel's son, Axl Jack, is named after Axl Rose from Guns ‘n Roses, and Jagger gets his name from The Rolling Stones’ frontman Mick Jagger.

"Now they have Axl and Jagger in the family," an insider told US Weekly"Fergie and her sister are also huge [Rolling] Stones fans."

When Fergie’s sister gave birth two weeks ago, the Black Eyed Peas singer couldn’t help but gush over her new nephew. “HUGE congrats 2 my lil sis D-Ball 4 bringing gorgeous Jagger James Sampson into the world!!” Fergie wrote on Instagram on Jan. 24, “Baby Axl can’t wait to play with his cousin!! #LOVE #BLESSED.” She also shared a snapshot of the adorable newborn. 

Awww, we love that these two bebes were born so close to each other! We're guessing they're going to be the best of friends.