Justin & Hailey Bieber Kick Off Their Weekend at a Saturday Afternoon Party

Justin Bieber and his wife Hailey are enjoying a low-key weekend!

The married couple was spotted kicking off their weekend by attending a birthday party on Saturday afternoon (August 20) in Los Angeles.

Justin was dressed in a Kanye West t-shirt over a long-sleeved white shirt. He finished his look with yellow pants and white sneakers. Hailey wore a tank top, beige trousers, and sneakers.

The couple joined a bunch of other stars on Thursday night while helping their friend Kendall Jenner celebrate the launch of her new 818 product.

Justin is among a list of A-list music stars who have been open about regretting some of their hit songs. Can you guess which one he said?

FYI: Hailey is wearing Fila sneakers and an Emi Jay hair clip.

Click through the gallery for 50+ photos of the Biebers attending a party…