Fancy dress shops / sites recc's please

Evening all

Im attending  / semi arranging a street ( cul de sac ) party in July.

We have agreed on a beach theme and now the hard part of finding a costume which will wow people without making me look stupid ( not that i'm vain or anything )

I am a larger lady size 22 / 24 and will consider anything obviously i don't want swim wear but am wondering about something like an ice cream / ice lolly costume if there is such a thing.

I've just looked quickly on line for shops but would rather people could give me recommendations for good sites/ price/ service

TIA

For party stuff I use these two sites..

www.partypacks.co.uk

www.sillyjokes.co.uk

Their costumes are fairly low budget and basic but you might find them useful. Their delivery etc is excellent and i use them both regularly (I'm constantly buying new props etc.)

I have used this fancy dress website:

http://www.daydreamersfancydress.co.uk/

Their service is excellent.  The other thing I have found is to browse fancy dress websites to find something you like and then get it on fleabay cheaper!

http://www.joke.co.uk/

I've used them several times and they are very good.