The woman, who has asked not to be named, claimed she was attending a fundraising event in Dearborn, Michigan, with her father when the president grabbed her bottom.

"We got closer together for a family photo and it was like 'Holy crap!'" she told CNN, describing the moment Bush touched her buttocks.

"It was like a gentle squeeze."

She added that she told herself "it was probably an accident" until recent allegations of groping made against the former president caused her to reconsider.

"All the focus has been on 'He's old.' OK, but he wasn't old when it happened to me," she said.

She is the seventh woman to accuse the 41st US president of touching them during photo calls.