In honor of Whitney Port’s birthday, party ’til the sun rises this weekend. BUY Kelly Wearstler for Sferra What: Preorder superluxe duvets, pillows, sheets, and more designed by the beautiful and talented interior designer. Why: You’re a bed head. Where: Online at kellywearstlerforsferra.com. LEARN Academic Earth What: Top Ivy League professors lecture on topics like the financial crisis, climate change, the human brain, international politics, and astrophysics (for the real nerds). Why: Educate yourself. Where: Online at academicearth.org. SHOP Elezar Sample Sale What: Take up to 70 percent off the classic leather handbags and clutches. Why: Show some skin. Where: Online at elezar.com. USE MopShots What: Before you get your next haircut, visit this site for ideas. Styles are sorted by color, hair type, length, and look — and featured on real women (not weird ’80s models, for once). Why: Tame your mane. Where: Online at mopshots.com. SUBMIT Rainbow Sightings What: Finally, a site that features nothing but Roy G. Biv pics from around the world. Why: So many pots of gold. Where: Online at rainbowsightings.com.