Thank you for your question and welcome to Just Answer.
Your best bet is to go to a tanning salon and get a little burn on them. The tan part of your skin will not burn as easily, and this will really help even it out. With 7 days to go you still have plenty of time for the burn to heal.
For the day of the wedding, if you still feel like the lines are too distinct, use a little makeup to blur the lines. I believe the ladies call it "foundation"? Images available only to Customers.
Whatever you do, don't go get a self tanning product. You'll end up with orange stripes where your tan lines now are. No one will be impressed with that!
I hope this helps! Have fun at the wedding! Please don't forget to "Accept" my answer.
Regards,
Ryan
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