The youngest of the Kardashian Jenner clan celebrates her birthday with a group vacation in Mexico

Punta Mita, August 2015
Credit: Fameflynet Pictures

Kylie Jenner‘s 18th birthday bash is one for the record books.

After a lavish birthday party in Los Angeles attended by Gigi Hadid, Joe Jonas and Zayn Malik, she jetted to Punta Mita, Mexico, for an intimate vacation with her closest friends – including Hailey Baldwin and boyfriend Tyga, who appeared to confirm their romance with a sexy Instagram post on Monday.

Jenner took the opportunity to show off multiple swimsuits paired to various water sports. For Jet Skiing with Tyga, Jenner wore the same pink one-piece that her mom Kris Jenner wore 26 years ago, the 59-year-old pointed out on Instagram. “Ohhhhhhh so THIS is where my vintage Body Glove bathing suit went!!!!” she captioned the snap.

The birthday girl also alternated a white sporty and a purple strapless bikini for laying out on a yacht, and accessorized with beaded black-and-blonde cornrows and long green nails.

Kendall Jenner also wore white to frolic with her sister, opting for a crochet bikini on Wednesday.

Jenner, who received a Ferrari from Tyga and a Birkin bag from mom Kris, has had a birthday worth $400,000 so far, not including the Mexican getaway.

And the celebration isn’t over – the party continues into the weekend with the Keeping Up With the Kardashians star’s scheduled club appearance in Canada on Sunday.