Generous model-turned-actress Molly Sims is supporting an orphanage in Mexico.

LOUISVILLE, Ky. (AP) - Celebrities of all types came out to party on Kentucky Derby eve, putting the spotlight on Louisville the night before the world's best known horse race.

Country music super duo Montgomery Gentry will appear on NBC's smash hit television series "Las Vegas." The two-hour season premiere will air September 28 at 9 p.m. EST on NBC starring Josh Duhamel, Molly Sims, James Lesure, Vanessa Marcil and Tom Selleck.

Former supermodel Helena Christensen has returned to the glamour world to capture old pal Naomi Campbell topless as part of a new style magazine spread about the catwalk greats. The Danish stunner-turned-photographer after stepping down from the catwalk and now she's among the world's most in-demand snappers.

Model/actress Molly Sims braved the red carpet at the Costume Institute gala in New York on Monday while nursing an injured foot. Sims fell while performing a stunt on hit TV drama Las Vegas and needed eight stitches to close a wound on her foot.

Tom Selleck is in negotiations to return to TV as James Caan's replacement in hit drama Las Vegas. The former Magnum, P.I. star is in talks to play a casino owner on the show.

-New Album, 'Good Girl Gone Bad,' Due In Stores June 5 Rihanna enjoyed a tidal wave of industry acclaim in 2006 with her second album A Girl Like Me, and its back-to-back #1 hits, "S.O.S." and "Unfaithful." At the 2006 Billboard Music Awards on December 4,

The countdown is on to the worldwide launch of the new single from multi-platinum international, award-winning Def Jam recording artist Rihanna, as "Umbrella" (featuring Jay-Z) makes its debut today, Thursday, March 29, at 5:00 p.m. (EST) and can be heard on www.rihanna.defjam.com.

NBC has renewed its veteran drama series Las Vegas (Fridays, 9-10 p.m. ET) for a fifth high-rolling season through 2007-08. "The cast and producers have consistently given us what we want from 'Las Vegas' - pure entertainment - and we're looking forward to another fun ride next season with the show," said by Kevin Reilly, President, NBC Entertainment.