A t-shirt that comes in only one size, usually two sizes bigger than you actually need.

Said t-shirts can be found outside of concerts, sporting events, 5k runs, charity walks, etc. or any other event where t-shirts are handed out.
I never got a concert tee after the Pearl Jam show because I knew it would only come in free size and those things are 4 sizes too big...all the time.
by Capt. Awesome October 05, 2007
Top Definition
One size fit's all.
"Free size clothes shrink & expand, but sometimes they lie & don't always look so hot."
by Allaiyah June 24, 2004
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