Katie Holmes is unabashedly bringing back the adult onesie, summer edition. The actress was spotted yesterday in Chelsea dressed in the most comfortable-looking outfit that one could wear to beat the heat: a gauzy striped blue “jumpall” by Ace & Jig. We assume Suri has a matching look. She tossed her hair into a bun and wore flat leather sandals and tortoise-shell sunnies to finish off her look. With the summer camp sign behind her, the only thing missing is an ice cream cone.