I probably own 5 LBD's that each serve their purpose so I obviously feel that you're perfectly entitled to own more than one LBD ;).
It's amazing to me how universal the need for a LBD is - so much so that most online retailers even now have sections of their website dedicated to the LBD's of the world. Here are some great ones I just found while doing a little dot com window shopping!
From White House Black Market - $168.00...

From Lane Bryant - $59.95...

From Ann Taylor - $215.00

From Igigi - $168.00

From Suzi Chin - $118.00

From Calvin Klein - $138.00
