Carey Mulligan, Marcus Mumford Step Out for Charity
05/11/2012 AT 08:50 AM EDT
The lead singer of Mumford & Sons, Mumford, 25, and Mulligan, 26, have kept their relationship fairly private, but were seen Thursday walking arm-in-arm into the ARK Gala Dinner at London's Kensington Palace.
The fundraising event raises money for children's charity partnerships.
It's not the only charity work Mulligan has done this week. She also put the Prada dress she wore to Monday's Met Gala on eBay, saying she'll donate all proceeds to Oxfam.
– Liz Raftery