AceShowbiz - Olivia Rodrigo channeled her inner childlike innocence with her Halloween costume. Attending an extravagant party hosted by Kendall Jenner over the weekend, the singer/actress dressed up as Betty Boop.

The 19-year-old got leggy in a skimpy red dress that featured a bandeau neckline, a large bow at the front and a frilly hem. The brunette beauty also donned a cheeky red garter on one thigh, with a pair of sheer black stockings and chunky heels.

The Grammy Award-winning artist completed her transformation into the cartoon character by sporting a black wig with curls on her forehead, a glam smokey eye makeup look and red lips. She opted for some matching accessories with a mini red handbag and some classic hoop earrings.

In some pictures which have circulated online, Olivia looked in high spirits as she made her way into the star-studded bash held in West Hollywood on Saturday, October 29, flashing a smile to photographers.

Meanwhile, Kendall herself dressed up as another cartoon character, Jessie from "Toy Story", for this year's Halloween. The model got sultry as she bared her butt-cheeks in denim shorts with revealing cowboy chaps.

The 26-year-old runway beauty also flashed her toned abs in a white and yellow crop top with matching arm bands. She put on a cowboy hat and styled her long raven hair in two braids while she was holding a wine glass.

"well aren't you just the sweetest space toy," she captioned two of her snaps as the fictional character. While many called her look "cute" and loved her Halloween costume, some others called her out for sexualizing such a child-friendly character.

"my childhood is ruined!" one of the critics wrote underneath her pics. "Oh now we're sexualizing Kids animations Ayy?" another commenter wrote. A third added, "It's a kids movie WHY?!?" Someone else quipped, "Toy story gotta be 18+ now."