Ashlee Simpson & Pete Wentz Celebrates Their Little Superhero

Ashlee Simpson and Pete Wentz threw their son, Bronx, a superhero-themed birthday party. It looks like they got some superheroes to stop by (check out the gallery). The guests came dressed appropriately, too. You can see a picture of Nicole Richie bringing Harlow, and other little guests were dressed up, too. Harlow looks like she’s dressed as a superhero princess, maybe?