I need help!

So, as of recently my boyfriend has been recruited for the Defence forces and with all my friends being in college, Im left with very little to do apart from look for dresses to the bf's passing out ceremony. In July. Yeah.. SOOOOO I have a lot of time on my hands!

I know its a bit early but I wont be seeing him for a while and thinking about the ceremony makes it that little bit easier! I feel like such a fool.. Any of my ex's never effected me this much but he is just amazing..!

I just threw up a little as Im sure the rest of you did too :P

Back to my main topic; what to wear!

Now bare in mind this is a military ceremony so it will be very fancy.. men in uniform.. CANT.WAIT.
Heres a few ideas :)

                                       Can anyone tell me the name of this style of dress?

I need help baaaadly :( x