AceShowbiz - Sasha Obama and Malia Obama opted for twinning looks for this year's Halloween. The daughters of former POTUS Barack Obama dressed in Western outfits when attending Billie Eilish's star-studded Halloween party in Hollywood on Saturday night, October 26.

In some pictures circulating online, Malia chose a modern twist on Western apparel with a denim mini-skirt for the bash. The 26-year-old paired the look with white tank top and thigh-high leather boots.

The Harvard grad additionally donned a black cowboy hat, a faux snake around her neck and a white bandage on her hand. She was also seen putting on a fake tattoo around her left bicep.

As for Sasha, the 23-year-old star donned a more subtle Western-theme ensemble. The University of Southern California wore a blue top, striped mini shorts and brown leather boots. Completing her style was a long black leather trench coat, a belt and brown purse.

Other notable figures attending Billie's party, which took place at the Birds Street Club in West Hollywood, included Kaia Gerber, The Kid LAROI and Kiernan Shipka. The rapper arrived in a gray hooded sweatshirt and black trousers, while the actress donned a white long-sleeved dress with matching white socks and black Mary Jane heels.

According to Just Jared, the "Birds of a Feather" star's brother FINNEAS and his girlfriend Claudia Sulewski were also among the partygoers.

Prior to this, Malia and Sasha were pictured attending the Charli XCX and Troye Sivan's "Sweat" concert in Los Angeles together. For the October 16 outing, Sasha wore a long-sleeve graphic shirt and denim pants, black leather boots, an oversized belt and bracelets.

Malia, on the other hand, opted for a gray halter top, a denim skirt and black tights. She followed her sister's look with black leather boots.