Embattled pop star Britney Spears’ new album ‘Blackout’ is espected to debut at number one in the Billboard 200 album charts. Spears’ latest studio effort reportedly sold 124,000 copies on its first day of release. This is more than double the number of records Carrie Underwood’s current chart-topping album ‘Carnival Ride’ sold on its release day, managing just 49,000 sales. ‘Blackout’ is already at number one in the iTunes download chart. Britney’s label, Jive/Zomba, has estimated the album will sell between 330,000 and 350,000 copies first week in the US, which should give Britney the coveted top spot with ease. The troubled star revealed she celebrated the release of ‘Blackout’ – her first studio album since 2003 – with an evening in eating fried chicken on Tuesday night. She said: “It was kind of laidback, really. We watched a scary movie and ate fried chicken – that’s about it!” The 25-year-old singer’s last LP release, ‘In the Zone’, sold a staggering 609,000 copies in the US in its first week.