In the first slide, Hilary treated her audience to a snap of her styled tresses, which were a pale blue shade that looked stunning against her flawless skin. She wore a pale pink knit sweatshirt that paired perfectly with her new hair hue, giving her a pastel princess vibe.

She mentioned in the caption of the post that the change was a bit of an impromptu decision, and that her hairstylists must "love [her] a lot" in order to put up with her style whims. 

In the second slide, she showed off her new hair in action, turning her head to the side and flashing a smile at the camera. She also clarified that the new tresses weren't some type of hint about the gender of her baby-to-be — the pregnant mama hasn't yet revealed whether she'll be having a girl or a boy to join her children, son Luca and daughter Banks. 

A few glimpses of her chic space were also visible in the video clip, giving her fans a peek into her home.

For the third slide in the series of snaps, Hilary shared a sweet family shot that featured her husband Matthew Koma and her son Luca. She wore a cozy-looking tie-dye sweatshirt for the snap, and the rest of her family was also dressed in casual attire.

Hilary couldn't help but take another shot for her fourth slide, showing off some hoop earrings as well as her blue tresses in darker lighting.  She even gave her followers a glimpse into what the new shade looked like when it was damp.

She finished off the series of snaps and videos highlighting her new look with a short clip taken while the coloring process was still happening. Two sets of hands were tending to her tresses as she sat in a smock, her transformation underway.

Her fans absolutely loved the new style, and the post racked up over 304,000 likes within just one hour of going live -- including one from actress Busy Philipps -- as well as 1,964 comments from her audience in the same brief time span.