The star shared the experience on Instagram.
Reese Witherspoon took a trip down memory lane when she visited her old dorm room at Stanford University Saturday.
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She popped in unannounced and told the current resident: “I used to live here!”
The Sweet Home Alabama actress posted about her experience on social media.
Caitlyn, the student currently living in the dorm, told Inside Edition: "I turned toward the door and all I see is Reese Witherspoon peeking in. She was like, 'Can we come in?' My jaw dropped."
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The 41-year-old Oscar winner was on the campus to speak to the Stanford Business School.
