Who says Celine Dion's not hip? Certainly not Justin Timberlake and Jerry Seinfeld, who are each planning to help out the chest-thumping balladeer as she preps for a two-year Las Vegas residency at Caesars Palace. Timberlake will host ''Celine in Las Vegas... Opening Night Live,'' a March 25 CBS special, even interviewing celebrity guests, according to Variety (among them Siegfried and Roy, no doubt).
The special will be split between behind-the-scenes segments and Dion's performance, which Variety said will include a Frank Sinatra tribute and the new single ''I Drove All Night.'' Seinfeld, meanwhile, will fill in for Dion at the Palace on May 2 and 3, while she's on vacation, AP reported. Don't count on Jerry's rendition of ''My Heart Will Go On,'' though.

