I have a wedding to attend, and really like the modest but elegant style of this type of dress.

I have found this on a MysticModesty site, however as the image is used so many times I'm unsure if its the original site, and that is is what I'd be purchasing.
Ideally, I'd need it in a sage or burnt orange, and I'm still trying to find others like it, but I'm not turning up anything promising.

Please help me! I have searched using the terms on the site, such as Batwing Maxi, Modest batwing Maxi, Formal Abaya long sleeved etc....