Tips on reducing cleavage in a specific dress or covering it up nicely?

I have an interview for an award I won (I'm going to state for it) tomorrow. There's a strict dress code for the interview and I thought I had the perfect dress in my closet. I pulled it out and tried it on and all you notice is BOOBIES!

Does anyone have any tips for covering cleavage up? Or maybe help on adding more fabric to the dress so that it covers my breasts? I thought about wearing a camisole, but the camisoles that I have are all cut too low. A scarf would look odd as well.
Tips on reducing cleavage in a specific dress or covering it up nicely?
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