Kourtney Kardashian Heats Up 37th Birthday In Iceland With 5 Cakes, Scott Disick PDA, & Justin Bieber Hookup

Kourtney Kardashian knows how to celebrate a birthday. Turning 37, Kourtney enjoyed a celebration Kardashian-style, which means over-the-top extravagance. From five cakes to romantic messages from both her baby daddy Scott Disick and off-again-on-again hookup Justin Bieber, Kourtney had an occasion to remember.

Taking place in Iceland, Kardashian’s celebration featured a variety of sweet treats, noted the Daily Mail.

Kim took on the role of waitress, carrying in one of the cakes as the clan sang “Happy Birthday” and Jonathan Cheban chanted “birthday cake number five!”

In addition, Kim took to social media to share an adorable throwback photo.

“Happy Birthday @kourtneykardash,” wrote Kardashian. “Thank you for always doing everything first so I can copy you! I don’t know what I would do without you! I love you!”

The rest of the family also chimed in with tributes on social media, and Kourtney shared photos of her vacation.

But where was Scott Disick? Kourtney and Scott were together for years in a relationship marked by problems over his drinking and partying, and Kardashian finally ended it last summer after he cheated on her.

With three children, however, the two have stayed in touch, and Disick posted a throwback photo showing the two in a passionate kiss, noted E! News.

“Happy birthday @kourtneykardash everyone who knows you loves you so much!” wrote her ex.

While Disick and Kardashian have not reconciled romantically, Kourtney has been enjoying a hot hookup with Justin Bieber, sources told People.

“[They have been] hooking up on and off for a few months now,” confirmed one insider.

Justin began hooking up with Kardashian last year, according to the sources. Bieber recently got together with the reality TV star at the end of last month amid his Purpose World Tour.

“They have hooked up a few times, including recently. It happens in L.A,” one source revealed. “He has met her kids, but they don’t hook up around the kids. It’s on nights when she has help and is able to go out.”

Justin thinks of Kourtney as “great,” added the source, who noted that Bieber appreciates her ability to be independent rather than cling to him.

“Justin thinks it’s cool that she is older and hot. She isn’t clingy and has her own life. There are no bad consequences for Justin to hook up with her. She is very easy going and just makes it fun for him to be around her.”

In addition, part of the reason Bieber likes to be with Kardashian is that it improves his self-esteem.

“[Justin is enjoying a] huge ego boost from hooking up with Kourt,” added one insider.

Since Kardashian’s baby daddy sent her a PDA photo and sweet message, will Bieber do the same? Although the 22-year-old “Sorry” singer didn’t use social media to share his feelings about Kourtney, Bieber didn’t forget, according to Hollywood Life’s source.

“Justin didn’t forget about Kourtney’s birthday. He sent her a sweet Happy Birthday message, along with an open invitation to come stay with him for the weekend in any city where he’s performing,” shared the source.

One possible place for Bieber to hook up with the 37-year-old mom of three? New York.

“[Justin] said he wants to spoil her to the max and treat her like a queen as a belated birthday gift. He wouldn’t mind doing something extravagant with Kourtney when he’s in New York for his May shows in Brooklyn,” added the insider.

As for where Justin’s former girlfriend Selena Gomez fits into the picture, Bieber and Selena continue to baffle Jelena fans, as the Inquisitr reported.

The two seemed to be rekindling their romance recently, with Justin posting a throwback photo showing him kissing Gomez, and Selena responding by liking it and proclaiming it “perfect.” Gomez then shared a photo of herself in a ruffled two-piece, which Bieber liked, and Selena even went to one of his concerts.

For now, however, both Gomez and Justin are busy with their music, and the two are staying in touch by texting and talking, according to Hollywood Life’s insider.

“They are back on good terms. They still talk on a regular basis, but when they are too busy, they stay in touch with texts to check up on each other. there is still a lot of love and tenderness there.”

[Photo by Mat Hayward/Getty Images]