My fiancé's parents are throwing us an engagement party with all of our friends. We don't get to see them often because we moved to Florida and everyone lives in Illinois. There are going to be about 30-40 people there. My fiancé's mom and I decided on the theme. I picked black and gold "classy" theme with optional cocktail attire. I want to wear a dress but I'm not sure exactly what to wear. I'm very picky and want to make sure I look good for the party. Any ideas??

I walked down the street with my girlfriend and asked her "Will you marry me?" She said "yes". We went to her apartment and she picked out a ring online. I bought her the ring and it arrived in my possession. Is this a legal engagement?