Drew Barrymore's youngest daughter is growing up so fast!

The 41-year-old actress took to Instagram on Friday, April 22 to share a sweet new photo of her rarely-photographed little girl Frankie Barrymore Kopelman in honor of her second birthday — and the pic of Frankie is cuter than cute!

"Happy Birthday to my angel, Frankie. Happy Earth Day birthday! And Happy Earth Day to all! #2YearsOld #NatureGirl," Drew captioned the snapshot of Frankie turned away from the camera while standing in a garden.

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The E.T. star and her estranged husband, Will Kopelman — the two announced they are divorcing after nearly four years of marriage in early April — are additionally parents to a three-year-old daughter, Olive Barrymore Kopelman, who was born in September 2012.