Rocker Pete Wentz hates girlfriend Ashlee Simpson's too-revealing outfits - and has taken to stitching them up himself.

The Fall Out Boy bassist has taken up sewing as a hobby because it calms his nerves, according to American tabloid Star.

A friend tells the publication, "Sewing is very calming to him. Ashlee likes formfitting clothes, but Pete thought some were too tight and revealing - so he decided to take them out a bit for her."