I feel good without make-up: January Jones

"Mad Men" star January Jones has revealed she feels "sexy and vulnerable" without make-up.

The actress said she feel less vulnerable once she is dressed for her roles, reported People magazine.

"I feel sexy and vulnerable when I have no makeup on," she said.

The 37-year-old actress, who recently stripped for a sultry photo-shoot, is experimenting with her looks again and transformed into multiple personalities with wigs and gorgeous make-up.

Talking about the hairstyle, she said, "I was at my most confident as a kid. It actually wasn't until I got into high school and started to get quote-unquote pretty that my confidence started to disappear. So I want to give the message that girls can be proud and self-assured no matter what funky haircut they have.