when to wear a party dress with tights?

  1. I love how party dresses are sometimes worn with pumps and black tights, but I'm not sure when it's appropriate. I bought this dress (http://www.shopbop.com/shop/product_detail.jsp?PRODUCT%3C%3Eprd_id=845524441805847&FOLDER%3C%3Efolder_id=2534374302025533&fm=browse-brand&ASSORTMENT%3C%3East_id=1408474395181057) in dark teal to wear to a wedding this weekend, and I'm wearing black pointed-toe stiletto pumps with it. Do you guys think it would be okay to wear black tights? Or is that too formal? The wedding is at 2:30 and the reception is at 5:30.
  2. I dunno... I think it's a little early in the season for opaque tights. But, I also think my opinion is probably swayed because it's still so warm here. :shrugs: