Broadway supernova Idina Menzel has obviously been digging through her family’s attic in Long Island, because she just tweeted an amazing blast-from-the-past photo from her wedding singer days. The Rent and Wicked alum is sporting some fantastic pink eyeshadow, feathered bangs, giant rhinestone earrings, and wait...is that blue eyeliner? Yes. Yes, it is. We’re hoping the Frozen fave will belt hits li…