Pete Wentz takes his girlfriend Meagan Camper to check up on her pregnancy at a hospital in Sherman Oaks, CA. April 15, 2014 Credit: Splash News

Meagan Camper is going to be one cool mom! The pregnant model, 24, disguised her growing baby bump in an oversized Guns N' Roses sweatshirt while out in Los Angeles on Tuesday, April 15, with her boyfriend, Fall Out Boy rocker Pete Wentz, 34.

Wentz and Camper announced their pregnancy in February, writing on Instagram that they are "super excited" about the baby. 

The rocker's lady wore her sweatshirt over a gray top with a pair of black cropped leggings and black sneakers. Camper accessorized with a crossbody quilted Chanel purse and oversized black sunglasses while on her Starbucks run with Wentz. 

Wentz, who made his own statement in a sweatshirt bearing the image of Mike Tyson and Homiés shorts, already has one child. He and his ex-wife Ashlee Simpson welcomed their son Bronx, 5, in November of 2008. Simpson, 29,  filed for divorce from the musician in February of 2011. 

This will be the first child for Camper and Wentz, who have been dating for about three years.