Fergie Celebrates 42nd Birthday With Epic Unicorn Cake and Song From Josh Duhamel and Son Axl

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Fergie is known for her singing, but on Monday, the pop star got a sung to! To celebrate her 42nd birthday, Fergie Ferg was serenaded by her hubby, Josh Duhamel, their son, Axl, and a group of family friends.

WATCH: Fergie and Josh Duhamel Celebrate 8 Years of Marriage in Sweet Photo With Son Axl

Duhamel posted a video of the sweet moment to Instagram, writing, “HAPPY BIRTHDAY FERGIE FERG!!! Love you madly, JD, Axl, and Company.”

Fergie kicked off the celebrations with a photo of her mom, Theresa Ann Ferguson, writing, “Happy bday weekend to us mommy!”

The “Fergalicious” singer celebrated with an epic unicorn cake that was covered in icing flowers and a golden horn.

“Happy bday to me!!! Thanks @lasands for my cake. #urbanunicorn #thelastunicorn,” Fergie captioned the photo.

WATCH: Fergie Stuns in String Bikini During Hawaiian Vacation With Josh Duhamel

In addition to her birthday fun, Fergie and Josh also celebrated eight years of marriage back in January with a fun family beach trip.

For more from the anniversary, watch the clip below!