Lauren, who left the MTV reality series in 2009 after five seasons, announced the news today (31 May), a decade on from when it first aired.
Now aged 30 and happily married, Lauren told her three million followers on Twitter that she has filmed a special one-off to mark the big occasion.
She tweeted: "Today is the 10th anniversary of The Hills! I am excited to announce that @MTV will premiere an anniversary special with me on Tuesday 8/2 (8 August)!"
MTV has since given fans more information about the show, which will be called The Hills: That Was Then, This Is Now, and Lauren has spoken to the TV network in more depth about it.
She exclusively told MTV News: "I am so excited to be returning home to MTV to commemorate the 10th anniversary of The Hills.
"Viewers watched me grow up and experience milestones on Laguna Beach and The Hills - and now they will get a firsthand look at my life today. I can't wait for you to see the special on August 2!"
It is unclear whether the show will also air in the UK, but we have everything crossed that it will!
Since leaving The Hills, Lauren has turned her back on the cameras and has been focusing on her fashion lines, books and lifestyle website.
However, last week she teased that something exciting was afoot after posing in front of a television camera for an Instagram photo. Alongside it, she wrote: "Never thought I'd see the day...."
Did you know, according to MTV's Twitter feed today, that Lauren wore a staggering 29 different hairbands on The Hills. You learn something new every day!
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