A good online source of towelling?

[milkmoustache]

I'm getting my MIL to make a beach cover-up/hoodie for DD, but am struggling to find any towelling. Patterned would be ideal so she can produce a Boden/Mitty James copy.

not sure about online, but have you got a branch of dunelm mill near you?, they usually have qute a good fabric department. or could you buy a bath sheet sized towel and cut it up?