I have this mesh avatar. First, you can wear most mesh clothing, but you have to wear the Shape for Jackets to get the upper to work properly with most items. Broderick is top heavy and most clothes won't fit the standard shapes. While some clothes do come with the hud, you can find those in the Mesh Outfits folder in your inventory.
There is a notecard which lists a few places that have clothes for this model, but none of them are making specific cltohes for this avatar. While you can try the demo's at the stores, and find some things to tweak and make work, clothes for this model makes it less desirable than most others.
Bodi Rags makes a pair of pants that fit this avatar, and V-Twins has a few things that you make fit if you tweak and play with the shape.