Mother-daughter love!

Tiffani Thiessen took to Instagram on Wednesday, June 15 to give her little girl, Harper, a sweet sixth birthday shoutout with a throwback photo of her daughter as a newborn — and the snapshot is nothing short of precious!

"Six years ago today you came into our life and our life has been forever changed. Thank you for being the sweet, silly, funny, caring, thoughtful, adventurous little girl that you are," the 42-year-old actress captioned the pic. "I am so utterly proud to be your mommy. Happy 6th Birthday, sweet girl."

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Tiffani and her husband, Brady Smith, 44 — who married in 2005 — welcomed daughter Harper in June 2010. The couple are additionally parents to an 11-month-old son, Holt, who was born in July 2015.