said she was on her way to London when she opened the email with the song attached and responded immediately, saying she would love to be involved. Eve said in an interview with Nova FM while she was in Australia to film the video, "I got an email, and when I heard it I was like 'hot song. Ok lets do it'. When asked if she did any research on Sebastian before agreeing to do the song she said "No. This is the thing. I don't really get into that. Like as an artist. It's more about the music, and if the song is hot, I'll deal with it. And I was like 'Ok, I'll do this song'." Release and promotion "Who's That Girl" was serviced to Australian radio stations on 5 November 2010. It was initially scheduled for radio release four days earlier, but had to be delayed due to last minute tinkering of the song. It was the most added song to radio in its second week and peaked at 13 in national radio airplay. Sebastian and Eve performed "Who's That Girl" on the grand final episode of The X Factor in November 2010, which aired in both Australia and New Zealand. This was the only time Sebastian and Eve performed the song together on stage. Since then either his current backing vocalist Carmen Smith performs the rap or he performs it himself. In the week following The X Factor final Sebastian visited Auckland New Zealand to promote the single and album with an instore appearance and media interviews. "Who's That Girl" was used by Channel 7 throughout December 2010 and January 2011 in commercials promoting the new season of Desperate Housewives. In December 2010 Sebastian performed at a private event to welcome Oprah Winfrey to Sydney during her trip to Australia. Footage of him singing "Who's That Girl" with Winfrey in the front row of the audience was shown during Oprah! The Interview which screened on Channel Ten on 14 December. Sebastian sang "Who's That Girl" during Channel Nine's Today at Suncorp Stadium in Brisbane on Australia Day 2011. On the first live show of the 2011 season of The X Factor in September the judges performed a medley of their hits. Sebastian sang "Who's That Girl". In November he performed at the annual ARIA Awards for the second year in succession. He sang a medley of