Reese Witherspoon and fiancée Jim Toth will wed next weekend at her Ojai Valley, Calif. home, RadarOnline reports.

The couple, who have been dating since early 2010, will reportedly exchange vows on Saturday March 26, just before Witherspoon sets off on a hectic press tour for her upcoming film Water For Elephants with Robert Pattinson, which hits theaters April 22. The small ceremony will take place just 90 miles north of Los Angeles, at Witherspoon’s 7-acre estate, The Libbey Ranch, with a reported 100 guests expected.

This is the first marriage for Toth, 40, an agent at Creative Arts Agency, and the second for Witherspoon, 34. The Academy Award winner has two children, Ava, 11, and Deacon, 7, from her marriage to fellow actor Ryan Phillippe, whom she divorced in 2007.

But what inquiring minds would really like to know is what Witherspoon will be wearing down the aisle. A frequent staple on Best Dressed lists, the actress has many fashionistas speculating about which designer was given the honor of creating her wedding gown. She's been spotted at various designer showrooms since her engagement went public, but a visit to Monique L’huillier in February has led many to believe Witherspoon is going with her perennial red carpet favorite. Look for knockoffs come summertime. —EMILY EXTON