Eva: Eyeing Nicollette's Ring?

04/17/2006 at 06:00 AM EDT

Word is that Eva Longoria has diamond envy over her Desperate Housewives costar Nicollette Sheridan's oversized engagement ring from fiancé Michael Bolton. "She's got the biggest rock you've ever seen," show creator Marc Cherry told us at the recent GLAAD Media Awards in Hollywood. "And of course Eva went to Tony Parker and went, 'I want one as big as Nicollette's!' So Tony is very upset with Michael Bolton." Maybe Bolton will introduce Parker to his jeweler.

Jay-Z Holds Court

He's known as the Jigga Man, but Jay-Z could easily be called the Godfather after the way stars were paying their respects to him at Las Vegas hot spot Tao, a source tells us. After attending a private birthday dinner for Tao co-owner Jason Strauss, he moved to a booth in the club's VIP section and was approached by a parade of celebrities, including Gabrielle Union, Ice Cube and Paris Hilton.

And the hotel heiress was looking for some props from the music mogul. After slipping her song "Screwed" to the club's DJ Reach, she asked Jay, "This is my song – don't you love it?" He nodded his approval and then continued his conversation with rapper Nas.

Caught in the Act

• Natalie Portman (right), dining with costar Dustin Hoffman and other cast and crew members from the movie Mr. Magorium's Wonder Emporium at Toronto's Sotto Sotto Trattoria. The actress feasted on seafood pasta and sipped red wine at the group's 10:30 p.m. meal after a long day of shooting.

• Rob Thomas, showering wife Marisol with kisses at New York City lounge Guest House.

• By MARK DAGOSTINO, JENNY SUNDEL and HEIDI STASESON