Size C fits full size dolls that are 19-21 inches long. We also consider this to be "Newborn" size, because these dolls may be able to wear real newborn clothes -- if they are truly a small newborn size. (Preemie clothes might work as well.) We do not recommend doll clothes for real babies!, but we do like to use real-baby clothes on some of our favorite dolls. Many of the doll clothes in this section were made in the 1960's by the Premier Doll Company, which went out of business in 1983. Premier was a jobber that made doll clothes for many other doll companies.