Inside Kylie Jenner's Luxe Birthday Party

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Kylie Jenner is celebrating her 22nd birthday as only a billionaire mogul can: by launching a new money-themed makeup line and inviting her nearest and dearest to a yacht off the coast of Capri, Italy.

On Thursday, the Keeping Up With the Kardashians star was spotted on the mega yacht Tranquility, with boyfriend Travis Scott and momager Kris Jenner along with Kris' boyfriend Corey Gamble. Scott Disick and his girlfriend Sofia Richie were in attendance as well, with Kourtney Kardashian expected to arrive with the three kids she shares with Scott.

The yacht can accommodate 22 guests, has a 29-person crew, costs $1.2 million a week and includes 10 cabins, a sauna, helipad, beauty salon, theater, steam room, Jacuzzi and swimming pool with underwater lights, according to reports.

Photographs of Kylie boarding a plane with a wedding dress set off a flurry of wedding rumors, but sources tell People there are no plans for them to marry.

"It's not Kylie's wedding and she is only flying to Italy to celebrate her birthday," said the source. "She had a big, successful year and she wanted to treat herself, her family and friends to the best party."

Kylie and Travis, 28, share an 18-month-old daughter Stormi, and frequently refer to each other as husband and wife on social media.