Kate Mara and Jamie Bell Welcome Their First Child Together - NBC Chicago

Kate Mara and Jamie Bell Welcome Their First Child Together

Just a few weeks ago, the famous couple hosted a festive baby shower at their Los Angeles home

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    In this April 2, 2019, file photo, Jamie Bell, left, and Kate Mara attend a special screening of Bleecker Street's "Teen Spirit" ArcLight Hollywood in Hollywood, California.

    Kate Mara is officially a mom.

    The actress and Jamie Bell welcomed their first child together earlier this month — and it's a girl.

    "We had a baby a couple weeks ago..." the new mom wrote on Instagram Monday afternoon. "Here are her feet."

    Their bundle of joy joins half-brother Jack, who Bell shares with ex-wife Evan Rachel Wood.

    Just a few weeks ago, the famous couple hosted a festive baby shower at their Los Angeles home. Kate Mara's sister Rooney and her beau, Joaquin Phoenix, attended the pink-themed soire, which was decorated with beautiful arrangements of wildflowers and roses. Multiple outlets report that the lucky guests showered the first-time mom with presents wrapped in pink paper.

    While everyone's gaze was fixed on the mom-to-be, all of her attention was devoted to Bell's son, Jack. A source told Us Weekly, "[She] spent a lot of time playing with Jamie's son in the yard."

    2019 Celebrity Babies

    For the occasion, Mara wore a white ruffled dress that completely matched the relaxing vibe of the party. Bell complimented her look in a denim dress shirt and black pants.

    Kate recently confirmed they were expecting their first child. "Went on a date with our bun in the oven," the 36-year-old actress lovingly captioned a photo of her and her husband.