EXCLUSIVE: REBECCA ROMIJN & JERRY O'CONNELL TO MARRY - FINALLY!

After a 15-month engagement, Rebecca Romijn and Jerry O'Connell finally agreed to hold an intimate wedding at their ranch near L.A. on Jan. 6, friends tell Star! The X-Men: The Last Stand star, 34, who was married to ER's John Stamos for almost six years, convinced her two-year younger fiancé to exchange vows at their Wagon Wheel Ranch before just 20 close friends and family. "For Jerry, this will be his first marriage and he wanted to make it a big deal, but Rebecca held her ground," says a friend.

Nevertheless, to keep the groom-to-be happy, "Rebecca agreed to let Jerry plan a party a few weeks after the wedding where everyone can get crazy!" adds another buddy.

— ROGER HITTS