To change Hewitt's locks from brunette to the new "Sunset Lover" shade, Lee used a combination of Wella's Professionals Koleston Perfect Permanent Hair Dye, Blondorplex Lightner and Color Touch ...

Meester's color was perfected by the LA-based hair colorist Amy Huson. "We originally started taking Leighton’s hair red in baby steps," Huson tells Harper's Bazaar UK.

"Honey-blond hair color is composed of a delightful spectrum of soft golden tones that feel like a spring sunset," Kelly Lin, cofounder and hair colorist at Salon SCK in New York City, tells POPSUGAR.

While no hair expert has been tagged in the new post, we'd be willing to bet JLo's longtime hair colourist, Tracey Cunningham, is probably responsible for these perfectly placed highlights.

Last week, the Selling Sunset's Bre Tiesi shared a series of new photos on Instagram -- and debuted brand new blonde hair. "Bodies on bodies, on bodies on bodies 😝," the reality TV star ...