It's a father-son night out.

Prince William and Prince George were spotted attending Aston Villa's UEFA Europa Conference League 2023/24 Quarter-final first leg match against Lille OSC at Aston, Birmingham's Villa Park Thursday night as Kate Middleton undergoes chemotherapy for cancer.

The pair seemed upbeat as they chatted while TNT Sport's live coverage panned to them in the stands. They were also filmed enthusiastically clapping after Aston's Ollie Watkins scored the night's first goal.

William, 41, and George, 10, dressed formally for the night, seemingly wearing button-down shirts under sweaters. George also sported an Aston Villa scarf.

"A long time ago at school, I got into football big time. All my friends were Chelsea or Manchester United fans, and I didn't really want to follow the run-of-the-mill team," he said, according to the Sun.

"I wanted to have a team that was more mid-table that could give me more emotional rollercoaster moments. Aston Villa has always had a great history."

The father-son outing came less than three weeks after Kate Middleton announced her cancer diagnosis. BBC Studios She revealed the cancer was found after she underwent abdominal surgery in January. BBC Studios Want more celebrity and pop culture news? Start your day with Page Six Daily.

Thanks for signing up!

William and George's attendance at Thursday evening's game - which ended in a win for Aston Villa - came less than three weeks after Middleton announced her cancer diagnosis.

During her announcement video, she revealed she was in the "early stages" of "preventative chemotherapy" after undergoing abdominal surgery in January.

Middleton, 42, also noted that she was most concerned about navigating the new journey in life with her kids.

"As I have said to them, I am well and getting stronger every day by focusing on the things thatwill help me heal, in my mind, body and spirits."

More must-see royals coverage:

George is the eldest child of William and Middleton. Their daughter, Charlotte, is 8, while their youngest son, Prince Louis, is 5.

Both have taken a step back from their public duties as they focus on their health.

Kensington Palace, however, confirmed Middleton has been working behind the scenes on her Royal Foundation Centre for Early Childhood's Shaping Us campaign from home in Windsor.