The former Hills and Laguna Beach star cuddled up to her handsome beau for a sunny selfie, posted to her Instagram account on 17 May.
Lauren, who swiped William's graduation hat for the photo, told fans: "This guy graduated from law school today! So proud!"
Former musician William, who remains away from the limelight, gained his degree from the University of Southern California. Earlier this year, he gushed to Above The Law that his reality star fiancée couldn't be more supportive of his legal dreams.
"She's extremely supportive of me being in law school, which is funny because I mostly come home and want to forget about it or to talk about what I'm doing at work," he said. "She's definitely interested in what I'm doing at school though. And it comes up at weird times.
"Like, a while ago, we were watching Suits, and I remember saying that what was happening in the show wasn't exactly the way it worked in real life."
Lauren, 28, became engaged to William in October 2013. They began dating on Valentine's Day 2012 after being set up by mutual friends.
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