"Dances With Wolves" star Kevin Costner (search) has wed his girlfriend of five years, Christine Baumgartner, at his Colorado mountain ranch.  

The afternoon wedding, held Saturday, was attended by 300 of their family and friends. It is the second marriage for Costner, 49, and the first for Baumgartner, 30.

The bride wore a white gown designed by Monique Lhuillier (search) and a beaded lace veil. Costner wore Ralph Lauren (search).

In addition to 1990's "Dances With Wolves," which won seven Oscars, Costner's movie credits include "No Way Out," "The Untouchables," "Bull Durham," "Waterworld," "Tin Cup," "JFK" and "Field of Dreams."

His most recent film was the western "Open Range."