Kristen Bell and fiance Dax Shepard announce the birth of daughter Lincoln Bell Shepard on Twitter, while Tori Spelling gives fans a peek of the moment her three older kids met their new baby brother Finn: See Us Weekly's top stories from Thursday, March 28, in the roundup!

1. Kristen Bell, Dax Shepard Welcome Baby Girl Lincoln!

It's a baby girl for Bell! House of Lies actress Kristen Bell and fiance Dax Shepard welcomed their first child together, the couple announced on Twitter Thursday, March 28. "She has mom's beauty and dad's obsession with breasts," the Parenthood actor joked.

2. Exclusive Video: Tori Spelling's Baby Finn Meets His Brother and Sisters for the First Time!

Miracle baby, meet your family! In a new home video taken hours after she gave birth to her fourth child, Finn Davey, Tori Spelling and Dean McDermott's other children – Liam, Stella and Hattie (then 5 years, 4 years, and 12 months old, respectively) – enter her hospital room and say hello to their new baby brother.

3. Exclusive Video: Mary-Kate Olsen Is Making Olivier Sarkozy "Wait" to Propose

At 26 years old, Mary-Kate Olsen isn't ready for marriage -- even though her 43-year-old beau Olivier Sarkozy is dying to put a ring out, sources reveal in the April 8 issue of Us Weekly. The once-wed multimillionaire "wants to lock her down for life," an insider says.

4. Jessica Simpson Goes Makeup-Free, Steps Out in Baggy Sweats and Tight, Baby-Bump-Hugging T-Shirt: Picture

Jessica Simpson is stepping back into her comfort zone -- style-wise, that is. On Wednesday, March 27, the pregnant Fashion Star mentor stepped out in Beverly Hills wearing baggy green sweatpants, blue New Balance sneakers, a black hooded sweatshirt, and a tight black T-shirt that showed off her growing baby bump.

5. Marisa Zanuck Hints She Quit The Real Housewives of Beverly Hills

Adrienne Maloof isn't the only housewife heading for the hills. Marisa Zanuck, who first appeared as a part-time cast member during the third season of Bravo's The Real Housewives of Beverly Hills, hinted she's leaving the reality show in her "final" March 26 blog post.

This article originally appeared on Kristen Bell and Dax Shepard Welcome Baby Girl Lincoln; Tori Spelling Shares a Sweet Home Video of Baby Finn: Today's Top Stories