How do you get them? Is there something you buy to put the photos onto tops, or do you have to get them specially from somewhere?
Anyone know?
I want one!! :)

I put pictures of our previous dog, onto a t-shirt for my husband, using iron on transfers. You select a suitable print,size etc via the computer & printer (remember to reverse the print) then just iron it onto a suitable t-shirt. Quite easy and it has lasted for ages :D
It recommends you use suitable print cartridges but I just used the ones in the printer at the time and it has been washed and ironed (on the reverse of the t-shirt ) lots of times successfully.
I think lots of print shops will do it for you as well if you provide a photo,but that will be much more expensive :D
Jacqueline :)

Like Jacqueline a t-shirt transfer kit and the pc - DIY is  cheaper.
You should be able to get them in most large stationer, or online.
[link] http://www.viking-direct.co.uk/(eusfqo55capii455wjtwpt55)/catalogSku.aspx?PR=V27&ID=TT10 [/link]

I'm not sure if they do t-shirts but telewests blueyonder site allows you to use downloaded photos to make items.  I got a mug made for my friends daughters birthday with a picture of her and my dog cosying in on the sofa and you can get text put on it too.  I think the mug cost approx £10 inc. P&P

Try this site, loads of supplies and advice - www.craftycomputerpaper.co.uk

if you pm me I can help.