By Maura Hohman
September 17, 2018 04:25 PM
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Justin Bieber and Hailey Baldwin got married just four days ago, so it’s no wonder the couple is packing on the PDA.

The newlyweds were spotted smooching in a park in London on Monday after the 21-year-old model’s Adidas Originals Falcon at JD fashion show. (Baldwin was recently named the first-ever Style Creator for the two brands.)

In the pics, the couple is locking lips with arms wrapped around each other. The pop star, 24, is wearing a collared shirt, ripped jeans, checked Vans sneakers and a bandana, all in shades of blue. His new wife is sporting her go-to bun and gold hoop earrings along with a denim and green jacket and baggy satin leather pants.

Hailey Baldwin and Justin Bieber
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Justin Bieber and Hailey Baldwin
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The couple was also seen walking around the city, stopping at Joe & the Juice for a juice and Pret a Manger for a coffee.

Justin Bieber and Hailey Baldwin
Beretta/Sims/REX/Shutterstock
Justin Bieber and Hailey Baldwin
Beretta/Sims/REX/Shutterstock

RELATED: Inside Justin Bieber and Hailey Baldwin’s Secret Ceremony: ‘They Didn’t Want Anyone to Know’

Ahead of Adidas at JD fashion show, Baldwin posted lots of behind-the-scenes photos of outfits from the collection, which are very athletic-wear focused. And the Instagram account for UK sports retailer JD Official showed the model taking in the collection from the front row during the runway presentation in a cute and candid video.

“They didn’t want anyone but their families to know they got married. This wasn’t a wedding,” a source told PEOPLE exclusively, adding that the actual party with family and friends seems more important to the newlyweds than the legal act.

“They can’t wait to have a wedding,” the insider said. “But for other reasons, it was easier for them to get the legal stuff out of the way now and to get married. It was more of a necessary ceremony to make it legal. It doesn’t seem like it was a big deal to them.”

Justin Bieber and Hailey Baldwin
UMV/Star Max/GC Images

After a two-month engagement, “they decided last week to get married,” the source continued. “They made an appointment [at the court] and seem happy about it… They are still planning the wedding and are excited to have a celebration. They are still deciding on a wedding location.”

On Friday, a day after the legal wedding, a source told PEOPLE of the ceremony: “They went ahead and did it without listening to anyone.”

The “What Do You Mean” singer popped the question to Baldwin in July during their vacation in the Bahamas at a local restaurant. They started dating (again) in May.