Kate Beckinsale teared up while singing to her mom, Judy Loe, in the hospital after hinting at a “deeply painful” situation that led to her dramatic weight loss.

The actress took to Instagram Wednesday to share a video of herself emotionally singing The Everly Brothers’ 1958 hit “Bye, Bye Love,” in honor of a harmony group that Loe, 78, used to be in with her best friends — Mary, Sylvia and Chris — when they were 14 years old.

“I am a very poor substitute not being a very good singer,” she captioned the clip. “But I want my mum’s dearest and oldest friends in her hospital room with her.”

“[Sylvia] and Chris, please know I’m trying to keep the Four Teens going as best as I can from a distance and I love you both,” Beckinsale, 51, added.

The “Underworld” star thanked Loe’s friends for the “support and love” they’ve been sending.

“It is a mark of my mother’s extraordinary capacity for love and deep respect for relationship history that her friendships with her early school friends are still so very current,” she continued.

“Love you all but most especially my mum,” Beckinsale concluded, apologizing to “anybody in the hospital subject to [her] dreadful singing.”

The “Serendipity” star didn’t disclose the details of Loe’s hospital stay, but Beckinsale revealed last year that her mom was diagnosed with stage 4 cancer.

In February, Beckinsale asked her followers to say a “spare prayer” for her mom via Instagram.

Earlier this month, Beckinsale referenced a difficult situation as she responded to fans who critiqued her appearance.

At the time, she had shared a photo dump of herself sporting several bikinis when netizens commented, “You don’t look good. I think you honestly need help,” and “Oh sweetheart, I honestly think you have a problem!!!”

Beckinsale clapped back, writing, “Yes, I do. I’m going through one of the most deeply painful times of my life. The body keeps the score.”

The “Pearl Harbor” star has previously called out critics who have commented on her body.

Beckinale was at the center of body-shaming after she was hospitalized due to a hole in her esophagus last year.

Around the same time, she was also dealing with the death of her stepfather, Roy Battersby.