In 1999, the success of teenaged pop singers Britney Spears, Christina Aguilera, Jessica Simpson, and Mandy Moore marked the development of what Allmusic refers to as the "pop Lolita" trend, sparking the short careers of future pop singers such as Willa Ford, Brooke Allison, Samantha Mumba, Jamie-Lynn Sigler, Mikaila, Amanda, Nikki Cleary and Kaci Battaglia.