Jessica Capshaw Says Her Kids 'All Just Love Each Other': 'We Must Be Doing Something Right'

Jessica Capshaw may star on the long-running hit drama Grey’s Anatomy, but her personal life is a little more like Fuller House!

In May, the actress and her husband Christopher Gavigan, co-founder of The Honest Company, welcomed their fourth child: Josephine Kate. The baby girl joined siblings Poppy James, 4, Eve Augusta, 6, and Luke Hudson, 9.

But although Capshaw, 40, and Gavigan have a big brood, there is no sibling rivalry going on in this family.

“They love her. They just love her, love her, love her,” Capshaw told PEOPLE Monday of her older children’s affection for their new baby sister at the Baby2Baby Holiday Party, presented by Tiny Prints at The Grove in Los Angeles.

“They can’t get enough of her. Thanks goodness. We must be doing something right,” the daughter of Kate Capshaw (and stepdaughter of Steven Spielberg) continues. “They all just love each other and that’s so wonderful to be a part of.”

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While it’s clear that everyone loves Josephine, there’s something the 7-month-old isn’t crazy about: eating food.

“While we’re all slaving over making homemade organic purées, she seems to not be interested in food at all,” Capshaw shares.

“She doesn’t want to eat at all. So we get a very sour face and a no-thank-you. So all that food that we make so lovingly, pretty much ends up back in the kitchen sink,” she adds with a laugh.

Despite Josephine’s aversion to food, Capshaw is now focusing her energy on bringing her family together for the holidays.

“It’s about tradition, and it’s about creating times for your kids to really enjoy what I think that the holidays are all about — which is, again, giving, receiving, and being kind, and going out of your way maybe even a little bit more.”

“We have a lot of [traditions] that I think everyone does. It’s the letters to Santa,” she continues.

But for her clan, “tradition” doesn’t only mean sticking to the old. Capshaw and her husband have created new family traditions for the holidays.

“On Christmas morning, my husband is chasing the elves away. [He] clears them out before the kids can come down the stairs to see what’s underneath the Christmas tree — which has pretty much all my children simultaneously exhilarated and terrified that there are elves that might be living downstairs,” she explains.

“We just started a new one where we draw a name, within our little six-person family, and so everybody gets someone to buy a present for. So the kids are really excited about the people that they drew out of the hat to see who they’re going to buy a present for, which is very cute.”