Need suggestions on what to wear...

Did you know that I am "fashionally challenged"?
True story.
It's a shame, too.
I see all my friends (many of them pictured above at Sat. night's MOM 4th Birthday Party) dressed so cute for girls night outs and things like that.
Then I see me...no sparkles, no jewels, no pretty boots.
Just Jessica.
Sigh.

So, what would you suggest I wear to a great friend's BIG 4-0 birthday party in two weeks?  I do own skinny jeans and I am not afraid to use them.  I just need to find some fab boots on a killer sale to go with them....