The Phineas and Ferb star arrived at the Disney Theatre in California rocking a floaty taupe maxi dress by Free People complete with see-through panels, which revealed a hint of her black bra.
To complete her boho outfit, Ashley threw on a leather biker jacket before layering two long silver necklaces.
Beauty-wise, the starlet opted for a bronze smoky eye, slicking her pout with nude lippy and applying bronzer for a sunkissed glow.
She finished her look with a tomato red mani while giving us all a glimpse of her mega-watt sparkling engagement ring. Swoon!
The 28-year-old got engaged to fiancé Christopher French in August this year after he romantically proposed on top of the Empire State Building in New York.
And in a recent radio interview with Ryan Seacrest, Ashley gushed about how she knew her future hubby was 'The One' from the very start.
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