It's been 10 whole years since she has played Lizzie, but Hilary came across a blast from the past as she turned on the TV last night.
And, judging by her tweets, the 27-year-old loved every minute of seeing her alter-ego again.
Not being able to resist watching her younger self on screen, Hilary shared a photo of herself in action from her sofa.
Taking to Twitter, she said: "Yea #LizzieMcGuire lol @ABCFamily bringing everybody back #butterflyclips."
Reminiscing with her followers, Hilary then tweeted: "Few things... Can't believe chokers are back & Kate why you gotta be like that!! Hurting me & s*** #NoBullying #LizzieMcGuire."
Since her Lizzie McGuire days, Hilary has gone on to become a mum to her two-year-old son Luca as well as star in many movies - A Cinderella Story, Material Girls - and hit TV series Gossip Girl.
But, it seems she's not willing to let go of her first big screen role just yet...
When asked if she would ever consider starring in a Lizzie McGuire reunion movie, Hilary said she would be "totally open" to it.
Best news ever, right?!
Speaking about Lizzie's return, the US actress said: "Why not? So many people loved [Lizzie]. I loved her.
"Honestly, working on that show, I got so strong with my physical comedy and all the things that they would throw at me... it was a really, really fun show."
We'll have our fingers crossed, then!
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