Just off the top of my head...
mid-January: 2x points on skincare, new birthday gift revealed, new year's promotion for rouges
February: 2 or 3x points on perfume (for Valentine's Day)
mid-April: 15% off for Chic Week, spring soiree for VIB Rouges
early May: 3x points on perfume
late August: 2x, 3x, 4x points on all purchases for BI, VIB, and Rouge, respectively
October: releases of holiday products, game promotion for deluxe sizes and points, Friend and Family sale
mid-late November: 20% for VIB and Rouge, Black Friday $10 deals.
mid-December: $15, $20, $25 off for BI, VIB, and Rouge, respectively. Advent calendar of deluxe samples, 20% off sale items.