Jessica Alba is really starting to show. Check out her glowing (and growing) face outside the Ed Sullivan Theatre for the 'Late Show With David Letterman' in NYC yesterday (01/28/08).

The 'Fantastic Four' actress - who is expecting her first child with her
movie producer fiancé Cash Warren - insists it's easy to forget you're
acting and become attracted to your on screen love interests.

Jessica told New magazine: "For me, it's a lot easier to be in a
relationship while doing a movie because there is absolutely no chance that
it would ever get confused that it's anything but professional.

"When you're both single, the lines are blurry. People are affectionate,
you're away, you're not at home or in an environment that you are used to...
that's when people get more confused about things.

"If you're with someone in real life, it's easier to separate yourself and
have a good time and be confident as an actor. I prefer to keep it
separate."

The 26-year-old actress has also revealed she fell for 29-year-old Cash
because he is romantic, funny and manly.

She added: "First of all, he is funny. That's a huge thing for me. I love
funny guys. I think all girls love funny guys. Cash is the only person who
knows that I am a comedian. And he's manly and romantic. I like a guy who's
in touch with his feelings, but can also watch sports and hang out with my
dad. That's important."