Halle Berry glows in Argentina

Pregnant Halle Berry was all smiles on Monday night as she walked a red carpet in a body-hugging purple gown that showed off her now-famous bump.

The actress, who told CNN it was the "biggest surprise" of her life to find out she's expecting a child at age 46 with fiancé Olivier Martinez, flew to Argentina to promote her 911 movie, The Call.

TMZ and Us Weekly have reported that Berry is expecting a boy. She demurred when CNN asked about that, saying, "I don't know, I don't know. Healthy!"