Charlize Theron Hosts Baby Shower for 'Huntsman' Co-Star Emily Blunt -- See the Sweet Pics

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Charlize Theron is helping Emily Blunt celebrate the soon-to-be arrival of baby number two!

The 40-year-old actress hosted a baby shower for her Huntsman: Winter's Warco-star, and invited fitness coach AJ Johnson, who shared some pics from the soiree. "An afternoon of love, laughs and friendship celebrating a special piece of my ❤️#EmilyBlunt with hostess with the mostess @charlizeafrica #CharlizeTheron," Johnson captioned a photo from the shower.

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Guests also included Theron's mother, Gerda Martiz, as well as makeup artists Jenn Streicher and Laini Reeves.

The guest of honor wore a floor-length maxi dress for the occasion, which showcased her growing baby bump.

MORE: Emily Blunt Opens Up About Expecting Baby No. 2 -- 'I Forget That I'm Even Pregnant'

When ET spoke with Blunt in April, she joked that her 2-year-old daughter, Hazel, wasn't too thrilled about becoming a big sister. "She's a bit dismissive of the idea at the moment," the 33-year-old star admitted. "She's quite liking being top dog."

Blunt did have an idea for easing her daughter into the idea of sisterhood. "My plan is just to tell her that this is less about having a sibling and more that she's being promoted," John Krasinski's wife quipped. "She gets to have a worker now that she can boss around."