Party City is the go-to shop for any party, whatever the theme. The merchandise covers practically everything, from luaus to hoedowns to bachelorette parties to Mardi Gras celebrations to birthdays. There's a massive greeting card selection and balloon store. Birthday aisles are organized by gender, and piñatas line the ceiling for the entire depth of the store. While balloons are the best-selling items, Party City also stocks costumes, banners, confetti, garlands, favors, tableware and invitations.