The "Good 4 U" hitmaker was spotted in an all-black Versace halter dress that featured a plunged front and cutouts on her chest, sides, and back. She had only thin black straps draping down her back.

Bieber was joined by bestie Kendall Jenner, who opted for a sleek black two-piece set and a coordinating clutch from The Row. The reality star said she’d “die” to own anything worn by Audrey Hepburn, ...