The Shadowhunters star sported a lacy red Ted Baker gown and metallic Aldo high-heeled pumps, which she proudly showcased on Instagram, with the caption: "Supporting @Zendaya and World AIDS Day #GenEndIt #WAD2015 w/@protesthiv and @UNAIDSGlobal. Thanks @tedbaker @aldoshoes for the look! xx." We loved her look and think she looked amazing sporting it for a good cause!
What did you guys think of Katherine's look? Let us know in the comments!