It looks like the Duchess of Cambridge may need to clear a bit of her schedule if she wants to watch Gary Barlow for a charity concert this December. Back in 2007, when "Take That" performed during a concert in memory of Princess Diana, Kate was spotted singing along to the song "Back For Good."

The band will perform Dec. 5 and 6 at the Royal Albert Hall in a benefit of The Prince's Trust and The Foundation of Prince William and Prince Harry. Barlow will be on stage for his first solo performance in 10 years.

"It's really important to me that disadvantaged young people get the support they need, especially at the moment. The Prince's Trust along with The Foundation of Prince William and Prince Harry are both doing great work with young people and I liked the idea of recognizing the work of the whole family. I hope the money raised through these concerts will make a real difference to young lives," the "X Factor" judge said in his interview.

"We are delighted to be involved in such a fantastic event, drawing attention to vital projects that are transforming the lives of disadvantaged young people across the UK. We would like to thank Gary Barlow and all those involved in the concerts and hope that, through their kindness, we can rekindle the aspirations of so many," Nick Booth, the Chief Executive of William and Harry's foundation said.

Kate is also now a patron of The Foundation of Prince William and Prince Harry so it would not be surprising if she would take part in such event. The only question is would the Duchess of Cambridge be there during the concert? Surely a lot of paparazzi will be on the lookout.

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