The reality TV star wore the sexy gown as she accompanied Chalamet to receive the Arlington Artist of the Year Award for his role playing Bob Dylan in 'A Complete Unknown'

Kylie Jenner unexpectedly joined boyfriend Timothée Chalamet at the Santa Barbara Film Festival.

Kylie Jenner and Timothée Chalamet were photographed out in Beverly Hills, days after she supported him at Saturday Night Live.

The reality star went all out with her accessories while cheering for Chalamet at the Feb. 11 event Kylie Jenner went all out with her bling while cheering on boyfriend Timothée Chalamet at the Santa Barbara International Film Festival.

As has become tradition, Chalamet met up with his girlfriend inside the festival after posing solo on the red carpet. Jenner, for her part, dressed up in a plunging black dress with a cut-out backside from Alaïa. Two blinding diamond rings completed her look. The model shared photos from the evening (sans Chalamet) the following morning.

Jenner has been by Chalamet’s side in public much more often in recent months, joining him at the Golden Globes, in Palm Springs for the International Film Festival, and at a taping of Saturday Night Live at the end of January, where the actor played both host and musical guest to promote his Bob Dylan biopic A Complete Unknown.

According to photos obtained by Page Six, the “Kardashians” star and the “Wonka” actor arrived at the swanky hotel on Thursday in a black luxury car.

Timothée Chalamet is still hard at work campaigning this awards season for his work in A Complete Unknown, and despite his and Kylie Jenner's relatively private relationship, she has been showing up to support him every chance she gets.