Schmoozing with the stars in Wellywood

Well it looks like I hit the jackpot this week. I've been entering daily giveaways and competitions online and thought I was pretty nifty when Vodafone topped up my prepay with $50 credit after my name was pulled out of the hat. But yesterday I had a very nice surprise in my inbox:
"Congratulations! You have won the draw for the trip to Wellington for the NZ premiere of Rise of the Planet of the Apes..."

Nice! I had some vague recollection about filling in an online form and figured that I had won movie tickets. The only trouble is, I live in Auckland, not Wellington.  Turns out that my big prize consists of more than just a couple of passes to the latest movie:  

Ummm...is this movie going to be scary??

"The prize is for ONE winner and their friend to attend the red carpet NZ Premiere of 'Rise of the Planet of the Apes' at Reading Cinemas Courtenay Wellington on August 1st with VIP seats and tickets to the exclusive after-party at the Hooch bar.

The winner and friend will then be given a room at Amora Hotel Wellington for the night. You will be flown from Auckland to Wellington on August 1st and return on August 2nd with the fabulous crew from Grabaseat.

Errr...have I ever mentioned that I'm terrified of flying?

Beloved received a phone call confirming that all was kosher and was told that we'd be met at Auckland airport on Monday and that we're to "dress to impress". My boss has kindly let me have a couple of days off work to go swanning off with the "it" crowd and our friend in the school office is going to have 7 y/o C for the night so she can get her to school.
Great!
SO WHAT AM I GOING TO WEAR??? At this stage, all I have is that fancy clutch I bought for the school ball and possibly a pair of shoes. I think I'm going to need a little more! Not wanting to break the budget, I've had a look in my own wardrobe and have come up with this:

Dog not included

And quite possibly this: 

Got this last year for 10 bucks in Farmers Red Dot Sale. Do you think anyone would notice?

Umm..borrowed this off Zeeb (who is a size 8). I'm a size 10(ish!)

Opinions???
And what does a Wellywood schmoozer wear over her posh frock to keep warm?? Meanwhile, Beloved isn't allowed to look scruffy so it looks like we're off to the shops tonight. Hmmm....somehow I have a feeling that this is going to turn out to be a slightly more expensive project than the school ball.