After a string of bit roles in films (often billed as Lolita David), this attractively sharp-featured Canadian-born player of Serbian parentage gained notice in the title role of Ron Shelton's "Blaze" (1989). As Blaze Starr, Davidovich portrayed the celebrated Louisiana stripper for whose love the married Governor Earl Long (Paul Newman) risked everything. The film's commercial failure, however, slowed down Davidovich's career as a mainstream Hollywood lead. Several parts in offbeat films followed, including a supporting role (replacing an ailing Elizabeth Perkins) in the atypical romantic