Sarah Jessica Parker rocks short bleach-blonde bob on set of 'Best Day of My Life'

Sarah Jessica Parker is feeling that blonde ambition!

The "Sex and the City" star was spotted on the streets of New York this week rocking a much shorter, blonder hairstyle. We're pretty sure it's a wig for her role in the upcoming "Best Day of My Life" -- but when it comes to SJP's style, you never quite know for sure.

Celebrity Sightings in New York City - July 21, 2017
Celebrity Sightings in New York City - July 21, 2017

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As Carrie Bradshaw in "SATC," Parker's hair was unmissable with big, bold curls. In real life, she sticks to simpler styles, typically long, loose waves. This cut and color, if it's legit, would be a marked change for the actress.

Parker, who is producing the flick, has Instagrammed a few set photos from the star-studded production. Other leading roles went to Renee Zellweger, Common, Taylor Kinney and -- it was recently announced -- Jacqueline Bisset.

Earlier this summer, Mila Kunis debuted a short style of her own, chopping off her long locks in favor of a shoulder-skimming length. There's just something about the summer heat that leads us all toward scissors!

That said, fall is fast approaching. Check out our picks for the best fall hairstyles in the slideshow below.