Fergie's Son Axl is Cute As a Button on Football Game Day

Fergie rocks a plaid jacket while attending church service on Christmas (December 25) in Brentwood, Calif.

On the same day, the 39-year-old singer posted a Christmas card of her adorable son Axl to her fans on Instagram.

PHOTOS: Check out the latest pics of Fergie

Over the weekend, Fergie and her husband Josh Duhamel posted pics of Axl on the day that their two favorite football teams Miami Dolphins and Minnesota Vikings competed against each other.

“This is what happens when daddy’s team plays mommy’s team.GoFins!#sundayfootball @MiamiDolphins @Vikings @joshduhamel,” Fergie tweeted.

Josh added, “Mom thinks I’m rooting for the Dolphins. Let’s let her keep thinking that…#SkolVikes.” Check out the pics below!