Set to host multiple dinners this holiday season, Sims tells Us her biggest tip to get party ready is to plan ahead. In fact, the Los Angeles-based mom has already planned out her party venue: The family's backyard. "I have a lot of outdoor space, so most of my entertaining is done out there. We'll have buffet stations all over," predicts Sims. "We've been known to do a potato station and a sundae station for the kids."