If you could live your life like Jay Gatsby, wouldn't you? The suits, the women, the music, the cars, the parties. Of course, F. Scott Fitzgerald's greatest character didn't live happily ever after, but that was then. This is now. There's no reason you can't dress up, pack a picnic, dance the Charleston and celebrate the end of the war. At the Dallas Heritage Village (1515 S. Harwood St.), the Jazz Age Sunday Social offers an afternoon of picnics, swing dance, ice cream and big band music at a Roaring '20s lawn party, complete with music from The Singapore Slingers. The party lasts from noon to 4 p.m. and tickets are $10. Attendees are encouraged to pack picnics and tuck flasks in their garters. Prohibition, baby.