Ashlee Simpson grabs frozen yogurt with her five-year-old daughter Jagger in Studio City

Ashlee Simpson and Evan Ross grab ice cream with her son Bronx, 12, and daughter Jagger, 5, in LA

Jessie J highlights her slender frame in a cropped hoodie and form-fitting leggings in Studio City

Whitney Port catches the eye in a patterned loungewear set as she grabs a coffee in Studio City