Barrymore, 37, walked down the aisle and said "I do" to Kopelman, 34, on Saturday in a private ceremony at her Montecito, Calif. estate. The actress' husband is an art consultant whose father, Arie Kopelman, is the former CEO of Chanel.
A source tells Us Weekly that the bride and mom-to-be wore a long white dress in pleated muslin and organza, designed for Barrymore by Karl Lagerfeld himself. The skirt of the dress was embroidered with flowers in organza, muslin, tulle and feathers. A black satin belt accentuated Barrymore's waist -- and baby bump. She also accessorized her bridal gown with Chanel Fine Jewelry.
During the reception, Barrymore added a black tweed Chanel jacket to her ensemble. The Wedding Singer star's best friend Cameron Diaz, 39, also wore Chanel, and was by Barrymore's side during the final dress fitting in Beverly Hills last Wednesday.
"Drew has been leaning on Cameron a lot," an insider told Us. "Cameron has been very involved."