American actress Felicity Huffman became so absorbed in her movie role as a man in the middle of having a sex change, she often couldn't decide whether to use the men's or ladies' toilet in restaurants.

The DESPERATE HOUSEWIVES star, who is used to playing exhausted mother-of three Lynette Scavo in the hit TV series, was so focused on her portrayal of a transsexual in comedy drama TRANSAMERICA, she had to convince herself she was a woman during nights out.

She says, "I said, 'Oh, I'm not supposed to be in here.' Then I walked out and thought to myself, 'No, no I'm a girl.'

"And then I walked back in again and I thought, 'No, I'm not.' It took me two times until I went, 'Yes, I can go in.'"