Justin Timberlake’s wife posted on Instagram

Jessica Biel has really caused a stir with her latest Instagram post.

The 39-year-old shared a snapshot showcasing a bold new hair look, showcasing a mass of curls in place of her usual straight style.

Makeup-free Jessica can be seen in the candid snapshot beaming for the camera with her curly hair falling around her shoulders.

In the caption, she quoted a line from the movie Mean Girls – “That’s why her hair is so big… it’s full of secrets.”

Jessica stunned fans with her gorgeous curls

Fans rushed to the comments section to compliment the star, but the majority were confused by her new look.

“Love this. Never knew you had curls!” one follower wrote, while a second questioned whether the hair was real, writing: “You better not have been wearing your stunt wig without me!” Other fans pointed out that the style actually “looks like a perm”.