Last night Zoe Kravitz got dolled up at the Seventh Annual UNICEF Snowflake Ball while Natasha Bedingfield performed, Warby Parker threw a holiday bazaar bash, Rachel Zoe and a pregnant Jessica Simpson hung out at the 25th Annual Footwear News Achievement Awards, Architectural Digest celebrated at the Guggenheim, Tinsley Mortimer and Rachel Roy wrapped presents with Zac Posen and more. Last night's parties were all about getting into the giving spirit!