First comes love, then comes engagement, then comes morning sickness -- at least that's the Hollywood way, and Kristen Bell and 'Parenthood' star Dax Shepard are no exception to the rule.

Oh, and Beverley Mitchell -- Jessica Biel's BFF and '7th Heaven' co-star -- announced she's expecting, too.

The engaged Bell and Shepard said through their rep on Monday that they'll welcome their sweet bundle of squalling neediness sometime in the spring. "They’re so excited — they’re both ecstatic. They can’t wait to become parents,” a friend the couple's told PEOPLE.

But it shouldn't come as too much of a shock that Bell is with child, as the politically-correct pair made it pretty clear that they'd probably become parents before tying the knot since they don't plan to wed until gay marriage is legal in their home state of California.

"We wouldn’t want to invite all of our friends who don’t have that right to celebrate us, who have that right. We just don’t feel [good] about that,” Shepard told the harpies on 'The View' back in July, with Bell adding, “Can you think about how rude that would feel?”

In other gynecological news, '7th Heaven' star Mitchell also told a breathless public that she too is expecting a springtime baby -- her first with husband Michael Cameron.

“Jess was one of the first to know," she said of Biel, whose wedding she recently attended. "I started crying. It was really exciting to share that with Auntie Jess.”

Let the mass knitting of baby booties commence.

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