I gained about 40 pounds in the first two years of my current relationship (I had also started a new job at the same time and had a very long commute). I feel you. Not having anything to wear SUCKS. The thought of buying new clothes when you're trying to lose weight SUCKS.
But take a deep breath. It'll all work out and you won't be going to work naked. You've lost weight before and you can do it again.
My two cents, which I wish I had done sooner. Go through your whole wardrobe. Get rid of the stuff you will never wear again, even if it fits now or might fit later, because it's old or ugly or not flattering. Then make a pile of all the stuff you want to wear again. Put it away somewhere for when you're ready for it, like in a tote. Keep all the stuff that fits, buy yourself a few new, nice things and then supplement with cheaper items and thrift store finds. You'll feel better about yourself if you like what you're wearing, but you need to make a plan to get back into your old clothes and feeling better about yourself!
You got this.
Started Jan. 2013 | Mini Goal 1: Onederland - Reached 5/20/14| Mini Goal 2: 179 (no longer obese)