One glance at our calendar made something very clear, there's much too much happening this week to keep it all to ourselves. So strap on your walking heels and get ready for some serious holiday shopping:

Tiffany & Co. Leather Collection Open House, Tues. from 10 a.m.-12 p.m., 350 Post St., Free: Hurry down to Tiffany's this morning for the chance to meet leather gurus Richard Lambertson and John Truex and check out their new leather collection for the iconic label.

JNBY Pop-Up Opening Party, Tues. from 6:30-9 p.m., 1077 Mission St., Free w/ RSVP: Shop innovative sportswear and tailored outerwear at the NYC-based designer collective's only retail location on the West Coast now until Christmas Eve. RSVP at rsvp@press-agents.com.

Epi Center MedSpa Coat Drive, Tues. from 6-8 p.m., 450 Sutter St. #800, Free: Bring in your neglected coats to donate to One Warm Coat, and in return you'll get gratis wine, hors d'oeuvres, 10% off all skin care products and a $50 gift card toward spa services.

Girls' Night Out With FreshGuide, Wed. from 6-9 p.m., 384 Post St., Free w/ RSVP: Head to Saks for 15% off, free makeovers and chair massages, Sugar-inspired snacks, giveways and drinks, courtesy of PopSugar's FreshGuide. RSVP here.

gr.dano Spring/Summer 2011 Preview, Wed. from 6:30-9 p.m., 440 Brannan St., Free w/ RSVP: It's time to start thinking spring at the local design duo's S/S preview, where you can look forward to a live model exhibit, wine and other tasty refreshments. RSVP at info@grdano.com

The Stylist Boutique, Thurs. from 6-10 p.m., 3558 20th St., Free: This month's stylist rack at Bianca Starr is sure to be packed with glam vintage finds not for the faint of heart provided by local fashion darlings and queens of the night, Mani Motarjemi and Domonique Echeverria.

SF Style Eco-Fashion Show, Thurs. from 8-11 p.m., 301 Battery St., $23.50: Catch a sustainable fashion show featuring the likes of Lorian Lindsay and Ethos Paris at the Bently Reserve, with a portion of the proceeds benefiting Glide Memorial and Global Service Corps.

Thread Holiday Pop-Up Shop, Sun. from 11 a.m.-6 p.m., 101 4th St., $5 w/ RSVP: Get a head start on holiday shopping on the top floor of the Metreon with countless indie designers, two fashion shows, live screen printing, free snacks and drinks, a clothing swap and oh-so-much more. RSVP here.