Can I wear a semi-casual maxi dress to a garden wedding?

I have some friends who are getting married in a few weeks who are having a garden wedding (in a backyard). It's at 7:30pm. The bride is wearing a "cocktail party like dress" (description curtesy of the groom) and their invitation is pretty generic, not too formal or casual. The groom said to go w/ a... show more I have some friends who are getting married in a few weeks who are having a garden wedding (in a backyard). It's at 7:30pm. The bride is wearing a "cocktail party like dress" (description curtesy of the groom) and their invitation is pretty generic, not too formal or casual. The groom said to go w/ a spring dress that's more on the casual side (I haven't seen the bride to ask her).
I love the maxi dresses that are popular right now and feel most comfortable in those compared to a knee or tea length one.

Can I get away w/ wearing something like these dresses?
http://www2.victoriassecret.com/commerce...

http://www2.victoriassecret.com/commerce...
Update: Any links to other suggestions would be greatly appreciated!!
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