sentences:  It earned double platinum certification in the United States by the Recording Industry Association of America (RIAA), and 3× platinum in Australia by the Australian Recording Industry Association (ARIA), and 4× platinum the United Kingdom by the British Phonographic Industry (BPI).The album's lead single, "Don't Cha", peaked atop the charts in 15 countries and reached number two on the "Billboard" Hot 100 and was certified platinum by the RIAA.Its follow-up singles, "Stickwitu" and "Buttons" were also a commercial success peaking in the top five on charts worldwide.