Fall Out Boy's Pete Wentz Expecting Third Child

Meagan Camper  Pete Wentz
Michael Kovac/WireImage

Meagan Camper and Pete Wentz attend Pre-Grammy Gala and Salute to Industry Icons Honoring Debra Lee at The Beverly Hilton on Feb. 11, 2017 in Los Angeles.

Looks like Santa had one last gift in store for Fall Out Boy rocker Pete Wentz.

The bassist and his longtime girlfriend Meagan Camper are expecting their second child together -- a baby girl!

The happy couple, who have been dating since 2011, announced the exciting news in an Instagram post shared on New Year’s Day. 

The photo shows Wentz's two adorable sons sitting together and holding a pink present that signifies the gift of their new baby sister. 

The new bundle of joy will join brother Saint Lazslo and half-brother Bronx Mowgli, who is Wentz's son from his previous marriage to ex-wife Ashlee Simpson, later this year.

2018 is set to be a thrilling year for Wentz with the arrival of his first daughter and the release of Fall Out Boy's latest album Mania, which is slated to drop later this month.