Day at the races- where to get petite frock?

[homebythesea]

Have looked at the obvious eg House of Fraser, Debenhams, Next. Are there any other shops/websites where I can look for a posh-ish petite frock (so a knee length dress doesn't end up mid calf) for Ascot?

Bump

ASOS.

Oasis have some pretty skater dresses at the moment which you could dress up.

you could also try a short dress in the regular sizes as being a short arse myself this sometimes works.
Karen Millen has some short ones at the moment which fall to my 5'0 knee

If you like the styles, I think Boden now does down to a size 6 petite.

Thanks all- I fear ASOS is rather too young for me

Will look at Karen Mi,ken- I do have a KM cocktail dress which is just right, thanks for the reminder!