Birmingham, UK - Prince William has made his first public appearance since his wife Catherine announced she has cancer, attending a soccer match between Aston Villa and Lille with son Prince George.

The 41-year-old heir to the British throne was pictured smiling and clapping with son George (10) as his team Aston Villa recorded a 2-1 win in the first leg of the Europa Conference League quarter-final on Thursday night.

The Princess of Wales (42) announced last month that she was undergoing treatment for a cancer discovered following abdominal surgery.

The news followed on from King Charles III, William's father, revealing that he was receiving treatment for an unspecified cancer.

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The king is carrying out official duties behind closed doors but is not conducting public engagements. He did, however, attend an Easter Sunday service.

William is a keen soccer fan and has supported Birmingham-based Aston Villa since he was a schoolboy. He is also the president of the Football Association.