Andy over at Hide Your Arms (a blog I enjoy reading regularly) has out done himself. Originally his list indexed 65 T-Shirt blogs back at the end of last year. He has recently updated the list which now totals 133 t-shirt blogs for your enjoyment. He has also put forth the effort to include short summaries and the update frequency for each. If you are a collector, fan, designer, blogger or shop owner this is one great resource! You can see the list here.