I am 6′-0" tall and 210 lbs. I wouldn’t consider myself fat but I am bulky. I used to be slim when I was younger but I did weight training for a couple years and took supplements and I got myself to a decent build. I’ve been lazy the last 3 years and my clothes don’t quite fit the same as they used to. I want to get back to the gym and get back to my ideal weight but in the meantime I need some new clothes. What are some fashion tips for a bulky guy?

Try broadcloth or oxford button up shirts. Obviously those aren’t everyday clothes, but they help by creating a vertical button line, and are crisp not clingy. Wear hoodies with a slim seam (not the state university baggy nasty ones, ones like this: http://www.ae.com/web/browse/product.jsp?productId=0195_9595_073&catId=cat90020) Wear nice dark jeans. Dark sweaters. Grey, dark brown, and black all are very trimming. Wear thin vertical stripes, if you like patterns.
Here are things to avoid:
You know those high-waisted, faded indigo jeans you see farmers wear? Yeck. Avoid those at all costs.
Avoid clingy or loose shirts. Hardly any one can pull them off and for some reason it’s the large people that try to.
Do not, under any circumstances, wear turtlenecks. 99.9 percent of guys can’t pull this look off and it tends to add bulk.
Ugly Christmas sweaters. I mean as joke they’re funny, but if you’re a festive kind of guy, I’ll be honest and tell you they look garish
Besides those things, you can honestly experiment. If you dress with style, people will focus on your clothes rather than the bulk. Good luck and I wish you a Merry Christmas!