The High School Musical actress looked gorgeous as she joined the stars of the zombie drama at a special screening in Los Angeles on Thursday evening (3 October).
Ashley embraced her inner boho chick with a beautiful embroidered dress and chunky black ankle boots, teamed with lashings of statement jewellery and a cute red shoulder bag.
It was that blinging rock on her left hand that stole most of the attention, however! How lovely is that ring?!
Ashley, 28, became engaged to her musician boyfriend Christopher French in August following a rumoured proposal at the top of the Empire State Building in New York.
Christoper wasn't at yesterday's event but it seems Ashley had more than enough to keep herself occupied, as she chased around after the cast!
See, even celebrities can get starstruck!
Ashley tweeted during the night: "Walking Dead premiere. Right now. I'm excited. I saw Norman Reedus on the red carpet. #freakingout #zombies."
And later in the night she cornered the man himself for a snap, which she shared with her Instagram followers. "It's Daryl!!!!" she wrote.
Ashley's next project will be family animation Saving Santa, about an elf who has to travel back in time to, you guessed it, save Santa! It's in UK cinemas from November, just in time for Christmas.
More engaged celebrities in our gallery below!
Copyright: Instagram Mark Wright