Oscars Preparty Dresses 2013 | Pictures

If you think the Oscars festivities are limited to this evening, then you are in for a treat: this weekend has been filled with standout red-carpet appearances. To kick off the celebrations, Nicole Richie, Miranda Kerr, and Heidi Klum celebrated at QVC's pre-Oscars bash in equally glamorous ensembles on Friday night. At yesterday's Montblanc and UNICEF pre-Oscars brunch, Rosario Dawson, Hilary Swank, and Emmy Rossum showed off beautiful black-and-white looks. And most recently, Kerry Washington and Jennifer Lawrence rocked chic black ensembles at the Weinstein pre-Oscars bash, while Jessica Chastain and Kate Bosworth stepped out in Chanel for the label's fifth annual pre-Oscars dinner. Click through to see every star-studded style moment before the big show.