Actress and singer Jessica Simpson is embracing change in style as she marked her 45th birthday with a striking new hair transformation. Known for her signature blonde locks, Simpson surprised fans by debuting darker, richer hair in a glamorous Instagram post over the weekend.

Sharing a series of celebratory photos, the star showcased her new look while wearing a sparkling see-through dress, accessorized with a black coat, silver heels, bold jewelry, and a matching handbag. Captioning the post “Fancy dive into 45,” Simpson appeared radiant and confident in her revamped appearance.

According to People magazine, Simpson’s fresh hairstyle was front and center in the photo set, which featured both solo shots and group photos with close friends and family.

Support poured in from fans and fellow celebrities. Singer JoJo commented, “You look. Unbelievable! Happy birthday gorgeous woman,” while Carmen Electra added, “Happy birthday hottie.” Simpson’s sister, Ashlee, also chimed in with heartfelt praise: “45. Ever looked better angel queen. Love you so much! This is your year.” Their mother, Tina Simpson, shared her love too, saying, “Happy Birthday my sweet girl! 45 looks real good on you!”

This isn’t the first time the “With You” hitmaker has switched up her look. She previously unveiled a sunkissed dirty blonde hairstyle during the American Idol Season 23 finale in May. Both transformations were crafted by her longtime friend and celebrity colorist, Rita Hazan.

Hazan noted that Simpson’s new tone reflects a more natural vibe—akin to “a kid on the beach”—symbolizing a fresh chapter for the singer following her recent split from husband Eric Johnson.