The daughter of City Zip has improved with every start to date and showed a gutsy attitude to win in the hands of Martin Dwyer.
She was drawn well in stall three and Dwyer settled her into a good rhythm on the heels of the leaders.
The leading pair kicked off the turn but Natural Charm went gamely in pursuit and picked up well when switched to the outside.
She still had a couple of lengths to make up on entering the final furlong but the duo ahead were tiring and Natural Charm gave her all to get up on the line, winning by a neck.
Roger said: "Natural Charm has progressed with each run and her latest third at Brighton has worked out particulary well. She tries hard and stays well."
Natural Charm on Warren Hill