A week after Chelsea Clinton drew attention for refusing to answer a question about Monica Lewinsky, Hillary Clinton said her "stomach is in knots" over what her daughter confronts on the campaign trail.

"It's her decision and she's making a real difference for me," Clinton said on NBC's Tonight Show Thursday (Watch above).

When Jay Leno asked about her daughter saying her mother would make a better president than her father, Clinton responded, "You know, she's such a smart young woman."

Clinton also confirmed reports that she is a cousin of Madonna during an appearance on the Ellen DeGeneres Show (airing Monday).

"It's true," Clinton said as DeGeneres showed a mock photograph of the senator wearing Madonna's famous cone bra.

"I want to know where you got that picture," Clinton said. "We have kept that picture under lock and key during this campaign. Nobody was supposed to see that picture."

Tell Us: Do light-hearted appearances make candidates more likable?