What to wear to an Elegant Garden Party???

Xxhaylsxx

I am attending an event next week. As the title suggests it is an elegant garden party. I have no idea what I should wear to it. I don't want to be overdressed or look silly cuz I am wearing the wrong thing. Any suggestions? Also heels, flats, wedges?
Any help much appreciated! :P
Thanks!

Twee.

I assume there'll be grass or gravel at a garden party, so no heels! You could probably manage in wedges.

Asos have lovely little flats in that would be perfect with a summer dress

http://www.asos.com/ASOS/ASOS-JEMIMA-Flat-Shoes-With-T-bar/Prod/pgeproduct.aspx?iid=2786833&cid=6459&Rf-200=25,3,11,9,20,5,12,7,26&sh=0&pge=0&pgesize=204&sort=-1&clr=White

http://www.asos.com/River-Island/River-Island-Ankle-Strap-Ballet-Flats/Prod/pgeproduct.aspx?iid=2936206&cid=6459&Rf-200=25,3,11,9,20,5,12,7,26&sh=0&pge=0&pgesize=204&sort=-1&clr=Cream

http://www.asos.com/ASOS/ASOS-LEAH-Ballet-Flats/Prod/pgeproduct.aspx?iid=2761751&SearchQuery=leah&sh=0&pge=0&pgesize=36&sort=-1&clr=Offwhite

Cute dresses from Oasis

http://www.oasis-stores.com/stripe-riri-dress/dresses/oasis/fcp-product/3470107461

http://www.oasis-stores.com/flower-cut-out-back-sundress/dresses/oasis/fcp-product/3770031360

http://www.oasis-stores.com/mexican-print-dress/dresses/oasis/fcp-product/3470104461

Do you know anyone else going, or can you ask the host what would be appropriate? You can always bring a cardigan or blazer to dress down an outfit if needs be.