The pair stopped by a Mexican restaurant in Los Angeles on Monday

By Christina Dugan
Updated July 08, 2015 05:15 PM
Credit: Courtesy Miley Cyrus

Miley Cyrus and Victoria’s Secret model Stella Maxwell had a fun night out at Cocina Condesa in Studio City, California, on Monday night.

“Miley and Stella were whispering into each other’s ear, laughing, smiling, and genuinely having a good time together,” an onlooker tells PEOPLE.

The pair, who became fast friends after meeting through mutual friend Cheyne Thomas, spent the evening sipping on cocktails and enjoying some authentic Mexican cuisine prepared by Executive Chef M Elena Vega.

The outing comes shortly after the two were spotted kissing while on a break from filming a music video last week.

The Bangerz singer, who is openly bisexual, shared her views on love in the June issue of Paper Magazine.

“I am literally open to every single thing that is consenting and doesn’t involve an animal and everyone is of age,” said Cyrus, 22, who launched her Happy Hippie Foundation this year to fight homelessness among youth and the LGBT population.

“Everything that’s legal, I’m down with.”

Cyrus ended the evening by giving Maxwell, 24, a kiss on the cheek while leaving the restaurant.

With reporting by MELODY CHIU