Rooney Mara layers up in a black sweater and sweat pants as she goes on a solo hike in Los Angeles

Justin Bieber adopts a bad boy image as he rides a dirt bike on the banks of the Los Angeles River

Jordana Brewster takes her well-dressed son Rowan on a coffee run near their home in Los Angeles

Ryan Dorsey pays visit to late ex-wife Naya Rivera's grave site in Los Angeles on her 34th birthday