HEROES beauty Kristen Bell is refusing to let event promoters use her romance with comic Dax Shepard to publicise events they attend together. The actress is eager to keep her relationship with Shepard out of the media spotlight, and has reportedly demanded organisers of a Miami, Florida hotel's New Year's Eve (31Dec07) party list their names separately. A source tells New York gossip column PageSix, "Kristen is taking Dax as her New Year's Eve date to the Raleigh Hotel in Miami. "She told event people they can put either her or Dax on the party announcements - but not both of them." Shepard recently split from Hollywood star Kate Hudson.