Singer Ashlee Simpson is following in the footsteps of her sister Jessica by launching her own fashion line.

The 23-year-old is teaming up with clothing manufacturer Wet Seal to release a collection of T-shirts, featuring designs "inspired by her own personality, sense of style and artwork".

The range comes out in the U.S. on April 22nd, the same day Simpson's new album, Bittersweet World, is released.

Simpson says, "I was inspired by so many fun, wonderful things as I was recording Bittersweet World and it's been great to carry through those inspirations into these new shirt designs. I hope my fans love this album and rock out in these shirts."