 " What You Waiting For ? " was released as the lead single from Love . Angel . Music . Baby. on September 28 , 2004 . The single peaked at number 47 on the Billboard Hot 100 , and was commercially successful overseas , topping the chart in Australia and reaching the top 10 in several countries including France , Netherlands , New Zealand , Sweden , and the United Kingdom . " Rich Girl " , featuring Eve , was released as the album 's second single on December 14 , 2004 , becoming Stefani 's first top @-@ 10 hit as a solo artist in the US when it peaked at number seven on the Billboard Hot 100 . Elsewhere , the song performed equally as successfully as " What You Waiting For ? " . " Hollaback Girl " was released as the third single on March 15 , 2005 . It became the album 's best @-@ selling and most popular single , while also becoming the first single to sell one million digital downloads in the US . The song topped the Billboard Hot 100 within six weeks of its release , earning Stefani her first number @-@ one single on the chart . 
