by Amanda First, BRIDES Photo: Getty Images You could shell out for a bachelorette weekend in Las Vegas — or you could be equally indulgent and book a beauty party. Whether you love blowouts, manicures, spa treatments or all three, there are plenty of ways to get gorgeous with your bridesmaids. Check out some of the country’s best beautifying bachelorette parties. Hit the spa: With Bliss’s “All ‘Maid’ Up” package, you and your girls can get ultra-relaxing, 75-minute massages, along with manicures and pedicures, which include a luxurious steamed milk and almond soak; Bliss Beautify your nails: Head to Valley Nails in New York City, where you can either rent out their Chelsea salon or have them come to you to create intricate, creativenail art ; Valley Nails Get wedding-worthy hair: Getting ready for a night out?