The Morning Show actress has posted a number of pics with her mom in the past, but she just recently shared some more snaps in honor of the matriarch's birthday. This new slideshow includes never-before-seen shots of the pair, as well as a rare throwback of Betty.
The post begins with a photo we saw back in May, when Witherspoon posted a loving tribute to her mom on Mother's Day. This image is followed by one of Betty hanging out with horses, as well as shots of Witherspoon and her mother laughing and hanging out in restaurants and stores together.
But it's the last image that really takes the cake. In this pic, we see an old portrait of Betty, where she sports a black turtleneck and a strand of pearls, seemingly posing for a school portrait. While Betty's age is unclear in the photo, we can't get over how much young Betty looks like Reese. (And for further proof, we direct you to this photo of Witherspoon wearing black and pearls in Legally Blonde 2: Red, White & Blonde.)