Susie Myerson’s gone scarlet.

Alex Borstein changed up her look in a major way for the Season 5 premiere of “The Marvelous Mrs. Maisel” Tuesday night.

The actress dyed her hair red — a stark departure from her usual jet-black locks — and styled it in Old Hollywood waves for the red carpet.

In addition to the hair color switch-up, Borstein also bleached her eyebrows for the occasion, following in the footsteps of stars like Kim Kardashian, Lizzo and Katy Perry.

And the longtime “Family Guy” star, 52, exclusively teased to Page Six Style that she’s thinking of keeping the look.

“You gotta have fun,” Borstein told us. “I had a photo shoot today, and I was feeling red and I love it.”

Added the Emmy winner, “You know, I may stick with it.”

Borstein paired her bold beauty look with a floral-embroidered dress embellished with colorful sequins.

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She further spiced up the snazzy look with glittery silver boots and a dark manicure.

And while the “MADtv” alum accessorized with several pieces of silver jewelry, her character’s signature necklace strung with keys was MIA.

But Borstein told us that after she “insisted” on keeping Suzy’s keys once filming wrapped, she got to take them home with her.

“Each key has a very specific meaning and only I know,” the star said. “I’ll never tell.”

Season 5 of “The Marvelous Mrs. Maisel” premieres Friday, April 14, with three episodes; after that, new episodes will be released weekly on Amazon Prime Video.