Typically, you would need around 1 to 1.5 yards of fabric for a basic peplum top without sleeves. If you're making a peplum top with sleeves, the fabric requirement might increase to about 1.5 to 2 yards. The fabric required for a peplum top depends on many things, such as the pattern, body measurements, desired fit, and fabric width.  It's always a good idea to check your pattern instructions or a sewing guide to get precise fabric estimates based on your specific measurements and chosen design.  Also, consider purchasing a little extra fabric for any mistakes or alterations during your sewing project. If you have leftover fabric, you can make a matching scarf for your hat or purse!