BLONDE bombshell Jessica Simpson was all smiles at the 2010 Operation Smile Gala in New York last week week looking particularly fresh in the Carolina Herrera Pre-Fall 2010 dress.

The busty singer-actress let her curves do the talking in the skin-tight gown, and kept accessories to a minimum, with just a few gold bracelets and a gold box clutch.

Jessica shot scenes for an upcoming episode of Entourage on Tuesday, and it seems she garnered a bit of interest from co-star Jeremy Piven.

“In between takes, he was staring at Jessica’s ass in the most obvious of ways,” a witness told UsMagazine.com.

“He wasn’t being sly about it and would just watch her every move. He flirts with ugly girls, so you can imagine how crazy for Jessica Simpson he was. She almost seemed like she couldn’t wait to change into her jeans, but she was a good sport about it and kind of laughed it off.”

The singer plays herself in the scene with Jeremy, and wore a tight skirt to his delight.

After filming, Simpson tweeted: “I have the utmost respect for the entire cast and crew of Entourage! Thank you for making the past 2 days memorable “.

Aww!

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