Kim Kardashian and Kanye West Make Low-Key Appearance at Kendall Jenner’s 21st Birthday Celebration: Sources

Happy Birthday Kendall Jenner!

The supermodel turned 21 on Thursday — and celebrated her milestone birthday in Los Angeles on Wednesday night, at an intimate dinner surrounded by family and friends before heading out to star-studded, 1920s-themed late night bash.

The festivities even brought out sister Kim Kardashian West and brother-in-law Kanye West — who made a low-key appearance at the event nearly a month after Kim’s frightful robbery in Paris.

The birthday girl looked radiant as she arrived at Catch seafood restaurant  for dinner, wearing a low-cut, lace-up, semi-sheer jumpsuit with a black bodysuit and green fur stole.

Jenner changed her outfit later in the evening, slipping into a silver sequin dress as she danced the night away at the new Los Angeles 1920’s retro themed restaurant Delilah.

“The party was totally her style,” a source told PEOPLE of the affair, adding that Kendall didn’t want a massive party in Las Vegas because “that’s just not who she is.”

She arrived to the party around 11 p.m and “was super happy all night.”

In attendance were sisters Kourtney Kardashian, Khloé Kardashian and Kylie Jenner. Kylie’s boyfriend Tyga attended as well, as did Kourtney’s ex-Scott Disick.

Both of Kendall’s parents — mom Kris Jenner and dad Caitlyn Jenner — were by Kendall’s side too. Kris’s beau Corey Gamble joined in the fun too.

A guest at the event tells PEOPLE  that Kim and Kanye walked in together just before midnight.

“They were very chill all night,” the source said. “Kim got on the mic at one point and said something funny and that was about it. She seemed pretty upbeat.”

The group gathered around Kylie’s table, added the source, which was in front of the DJ booth.

At midnight, Kris and Kim sang happy birthday to Kendall — presenting her with a birthday cake decorated with a snap of Kendall as a kid, the insider said.

Other notable guests? Cara Delevingne, Hailey Baldwin, Jaden Smith, Chris Brown, Cindy Crawford, Kaia Gerber, Melanie Griffith, Kate Mara, Gabrielle Union, and Fetty Wap.

Notably missing for the festivities? Jenner’s brother Rob and his fiancée Blac Chyna.

Many guests documented the fun inside on Snapchat, including Kylie, Khloé, Kourtney and of course Kendall herself.

As for any notable presents, the biggest one was a Rolls Royce— which put Kendall’s jaw on the floor.

Happy Birthday, indeed!