BEIJING, May 16 -- Paris Hilton likes her burgers spicy. The hotel heiress, actress, jewelry designer and entrepreneur will star in a television commercial next week in which she will slap suds on the side of a Bentley automobile and chomp on a thick burger while clad in a skimpy black bathing suit.

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US actress Paris Hilton shakes hands with Finnish Formula One driver Kimi Raikkonen during the popular German entertainment show 'Wetten Dass...?' (Bet it...?) from the ancient Roman amphitheatre of Aspendos near the Turkish Mediterranean resort city of Antalya May 15, 2005. (Dayoo photo)

German actor Ralf Moller carries U.S. actress Paris Hilton onto the stage of the popular German entertainment show 'Wetten Dass...?' (Bet it...?) from the ancient Roman amphitheatre of Aspendos near the Turkish Mediterranean resort city of Antalya May 15, 2005. (Dayoo photo)

Dayoo photo

Dayoo photo

    The ad for the fast-food chain Carl's Jr. will feature Hilton's signature tag line, which doubles as a reference to the barbecue sauce and jalapenos-pepper laden sandwich ¡ª "that's hot."

    The 30-second spot will debut nationally on the syndicated show "Entertainment Tonight," on May 17, then go into regular rotation in Western states where Carl's Jr. does business. In late June, the ad will be shown across the midwest to tout a similar sandwich at the company's Hardee's restaurants.

    "We're working on trying to make Paris Hilton famous," joked Andrew Puzder, president and chief executive of CKE Restaurants Inc., which owns the two fast food chains.

    The company is known for its racy television ads, one of which featured a woman eating a burger while riding a mechanical bull. Another starred Playboy magazine founder Hugh Hefner and several playmates. That ad was condemned by televangelist the Rev. Robert Schuller.

    The two chains also tout huge, dripping burgers at a time when other fast-food restaurants are offering more healthy alternatives.

    "She's very appealing to our demographic," which he described as young, hungry guys.

    "And it turns out she really loved the burger we wanted her to promote," Puzder said. "We did see her eat a couple of them at the shoot."