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Kylie Jenner

GVK/Bauer-Griffin/GC Images

Let the birthday celebrations continue!

Kylie Jenner was spotted at LAX on Saturday, a day before she is set to attend her birthday party at the Beachclub club in Montreal. She wore a light gray, long sleeve mini dress, paired with white and black sneakers and oversized sunglasses, and carried a tan leather purse as a female security officer escorted her inside the terminal. She also sported bright purple nail polish.

The Keeping Up With the Kardashians star had turned 18 last week and had advertised the bash on her Instagram page earlier this month. In Montreal and other parts of Canada, the legal drinking age is 18, as opposed to 21 in her native U.S.

#kyliejenner birthday party this Sunday @beachclubmtl @team.productions @keennestproductions #WhoIsMrSmith

A photo posted by King Kylie (@kyliejenner) on

That's mee ???

A photo posted by King Kylie (@kyliejenner) on

She had already celebrated her birthday several times with her loved ones, starting last weekend. She kicked off the celebrations with a visit to a children's hospital, where she distributed gift bags to patients, and later had dinner with her family at a Malibu restaurant. The evening marked the first time her parents Kris Jenner, 59, and Caitlyn Jenner, 65, reunited in public in more than a year and since the latter transitioned to become a woman.

Kylie and several family members and friends later headed out for an evening in L.A., where they dined at The Nice Guy restaurant and partied at the West Hollywood nightclub Bootsy Bellows for a private party that  featured a performance by her beau Tyga, 25. He gave her a Ferrari, worth about $295,000, for a present. She later denied crashing it, following rumors.

She also received a special birthday cake, which resembled her most famous body part.

Kylie, Tyga, sister Kendall Jenner, 19, and friends then jetted off to Mexico for a beach getaway for a few days, during which the Jenner sisters showed off some seriously hot bikini looks. Kylie even recycled an '80s swimsuit from their mom!

By the end of last week, Kylie was spotted back in her native Los Angeles, riding in her new Ferrari with Tyga.

PHOTOS: Kylie Jenner's bikini pics