Not everyone wrinkles early on the forehead. She does have lines around her eyes, her mouth, and her neck. Obviously, she's moisturizing heavily to slow down those fine lines but they're there.

Some people start aging early and it's a slow, consistent progression. Others it hits all at once, either early or late, and is a more rapid progress.

No doubt, as an actress, she's doing what she can but she might just have some.favorsble genetics too.