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Sean Parker, Alexandra Lenas

Michael Buckner/Getty Images for SXSW

Sean Parker is officially off the market.

The 33-year-old Napster co-founder married singer-songwriter Alexandra Helen Lenas Saturday evening at the Ventana Inn in Big Sur, Calif. in front of 300 guests, his rep confirms to E! News. 

Parker's blushing bride walked the aisle in a custom Elie Saab dress, while the entrepreneur donned attire designed by Lord of the Rings trilogy costume designer Ngila Dickson.

The couple has one daughter together, 6-month-old Winter, who also wore an outfit designed by the Academy Award winner.

While Justin Timberlake, who played Parker in The Social Network, was not on hand to serenade the newly cemented husband and wife, singer Loreena McKennitt and Irish band The Good, the Bad and the Ginger provided guests with some musical entertainment.

Congrats to the newlyweds!