With mouse ears on, "Cruel Intentions" co-stars Sarah Michelle Gellar and Selma Blair celebrated 20 years of friendship with a trip to Disneyland in California on Thursday.

The pair shared a special moment with Captain Marvel at Disney California Adventure Park in Anaheim, California.

PHOTO: Sarah Michelle Gellar, left, and Selma Blair share a special moment with Captain Marvel at Disney California Adventure Park in Anaheim, Calif., March 28, 2019.
Richard Harbaugh/Disneyland Resorts
Actresses and friends Sarah Michelle Gellar, left, and Selma Blair share a special moment with Captain Marvel at Disney California Adventure Park in Anaheim, Calif., March 28, 2019. The friends were celebrating over 20 years of friendship while visiting Disneyland Resort.

Late last year, Blair revealed publicly that she was diagnosed with multiple sclerosis.

She opened up about her battle with the central nervous system disease in an interview with ABC News' Robin Roberts earlier this year, saying in part that the people she surrounds herself with are what helps her stay positive.

"It's keeping me alive, no pressure to them," she said. "So rude of me, but the truth is they have been."

PHOTO: Sarah Michelle Gellar, left, and Selma Blair share a special moment with Captain Marvel at Disney California Adventure Park in Anaheim, Calif., March 28, 2019.
Richard Harbaugh/Disneyland Resorts
Actresses and friends Sarah Michelle Gellar, left, and Selma Blair share a special moment with Captain Marvel at Disney California Adventure Park in Anaheim, Calif., March 28, 2019. The friends were celebrating over 20 years of friendship while visiting Disneyland Resort.

Shortly after the interview, her longtime friend Gellar posted a touching Instagram tribute, honoring her the bravery of her "dear friend," who had walked a red carpet with the help of a bedazzled cane.

"This is my dear friend @selmablair Last night she stood on the world stage for the first time, since being diagnosed with MS," Gellar wrote about her Oscars appearance.

Gellar continued: "To say I’m proud, would be a gross understatement."

Gellar joked that when she is sick, she hides "from the world under my covers."

"But not Selma. She is facing this diagnosis, the way she faces everything, with dignity, grace and head on," she added. "I know the support and encouragement that she has received on this platform has truly been a source of strength for her. This is not an easy journey, but Selma will not let this define her."

PHOTO: Sarah Michelle Gellar, left, and Selma Blair share a special moment with Captain Marvel at Disney California Adventure Park in Anaheim, Calif., March 28, 2019.
Richard Harbaugh/Disneyland Resorts
Actresses and friends Sarah Michelle Gellar, left, and Selma Blair share a special moment with Captain Marvel at Disney California Adventure Park in Anaheim, Calif., March 28, 2019. The friends were celebrating over 20 years of friendship while visiting Disneyland Resort.

Disney is the parent company of ABC News.