Prince William & Kate Middleton Launch Charity Cancer Ward

Posted Thursday September 29, 2011 10:04 AM GMT

They’ve always enjoyed using their royalty for a good cause, and Prince William and Kate Middleton were spotted at the Royal Marsden Hospital in Surrey, England today (September 29) for a very special event.

The Duke and Duchess of Cambridge arrived at the medical facility to open a brand new children’s ward, smiling and waving to spectators and press as they made their way inside.

And though she’s been a member of the Royal family for months now, Kate is still keeping a close eye on her spending habits.

One source reported that Ms. Middleton uses discount rewards cards when she shops for clothing. "I saw all her rewards cards [to accumulate points at stores] she carries. She had to shift through them to find her Visa card."