Her second breakthrough was released in 2000, with the song "Mehboob Mere" from Fiza, for which she received another Filmfare nomination. Through her career, she performed mostly item songs and was described by the media as the "queen of item songs". Chauhan received her third Filmfare nomination with the song "Dhoom Machale" from Dhoom (2004) followed by two more nominations during the next year for "Kaisi Paheli" and "Deedar De" from Parineeta and Dus (2005). In 2006, she was bestowed with her first Filmfare award for her rendition of the song "Beedi" from Omkara and further two nominations for "Soniye" from Aksar and "Aashiqui Main" from 36 China Town. The following year, she recorded the title song of Aaja Nachle (2007) and "Sajnaaji Vaari", both critically and commercially well received. Chauhan received her twelfth Filmfare nomination with "Chor Bazaari" of Love Aaj Kal (2009) preceded by "Dance Pe Chance" from Rab Ne Bana Di Jodi (2008). In 2010, she received her second Filmfare award with the item song "Sheila Ki Jawani" (2010) and was nominated for international styled carnival song "Udi" from Guzaarish (2010). The year marked her International singing debut, where she was featured in an alternate version of the song "Heartbeat" by Enrique Iglesias.