We never knew there was a Serendipity 3 in Las Vegas! We loved the one (the original one) we went to last Spring Break in New York, and were pleaseantly surprised when we saw it in Vegas. I quickly ordered a putter butter sundae. That's the famous Frozen Hot Chocolate on the left. Looking around the restaurant that night, however, it seemed that no one knew that this drink was their specialty, as barely anyone was drinking it!