Help me fix my shoulders?

[fizzicles]

I have very tanned shoulders and some very obvious strap marks, and am wearing a strapless dress to a wedding next weekend. What's the best way to even it out? I have a white cardie/shrug that I will be wearing, so also keen not to turn that completely orange. Don't have time to get a spray tan.

Any suggestions?

Anyone? Instant fake tan? Is it too late for the gradual tan?

Would Sally Hansen airbrush legs type stuff maybe work? I have to scrub it off so would imagine the cardigan would be ok (test first though)!

Thanks, I was reading Sali Hughes about instant leg tan stuff and think that might be my best option.