Reese Witherspoon had a reason to celebrate this week as she marked her beloved mother Betty's birthday.MORE: Reese Witherspoon glows in rare vacation photo with husbandThe Legally Blonde star took to Instagram to share a series of previously-unseen family photos of herself with her mom over the years, including one of Betty as a teenager.It's safe to say that there's a strong family resemblance between Betty and her famous daughter, as well as Reese's lookalike daughter Ava.
VIDEO: Reese Witherspoon shares a glimpse inside her incredible family homeAlongside the pictures, the Hollywood star wrote: "Today I am celebrating!
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