Joking that pregnancy is "the one time in your life when you can gain 50 pounds and people congratulate you," actress Diane Farr admits that when an ultrasound revealed twins, "I said a lot of expletives."

Then I realized it was all about organization. Now Im pretty much prepared. If you open up any drawer in the room, theyre filled for until the girls are 2!

Describing how she chose to decorate the girls' nursery, Diane, 38, explains her rules: "You should splurge on a really high-end piece, then one medium piece, and a bunch of things to fill in. For her more expensive items, Diane picked out Posh Tots chandelier and lamps; for her mid-range items, Serena and Lily sheet sets. For furniture, she turned to Bratt Decor for their Venetian Crib in gold (Diane already had one she used with Beckett, so she added another to her nursery) and the Chelsea Double Dresser in espresso. We also hear the babies' room has a Moses Basket from Posh Tots, plus cute pink outfits from Bloomers Baby, all of which came in Diane's celebrity "BUMP" bag. (In fact, Diane used a gift certificate from the bag toward the purchase of her lamp and chandelier at Posh Tots.)

The former Numb3rs star and husband Seung Chung expect their twin daughters by the end of this month. The girls will join big brother Beckett Mancuso, 17 months.