Complex sentence: American singer Christina Aguilera rose to prominence with the success of her August 1999 teen pop eponymous debut studio album, which peaked atop the US "Billboard" 200 and was certified eight times platinum by the Recording Industry Association of America.
Split into simpler sentences: American singer Christina Aguilera rose to prominence with the success of her August 1999 her self-titled debut album. It topped the US "Billboard" 200 and was certified eight times platinum by the Recording Industry Association of America.