21 Puff Sleeve Sweetheart Dresses I'm Obsessing Over Who What Wear Sweetheart Neck Puff Sleeve Lace Trim Velvet Dress Velvet dress short Red Sweetheart Neckline Puff Sleeved Dress Red sweetheart neckline high low ruched A line by ThingsInLove Red Red Sweetheart Neckline Strapless Chiffon Sheath Ruched Cocktail Dress. Radiant in red, this sweetheart neckline puff sleeved dress features a sophisticated design for a truly feminine aesthetic. Ideal for a birthday celebration or festive social, the vibrant color ensures you look bright and put together. Style with silver heels for a fresh, high energy ensemble that radiates confidence.