Photo: Steve Granitz Source: Getty Images Millie's Netflix's Stranger Things series in 2016.
She began her career appearing as a child model working for Macy's, Mervyns and Old Navy.
And just hold onto it and see where it'll take you.
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Photo: Gregg DeGuire Source: Getty Images Ava print advert at age 4; the movie that put her in the limelight is Paranoia Tapes 2017.