While Drake's sophomore album is on track for a huge first sales week, his Young Money partner-in-crime, Nicki Minaj, may be releasing her second full-length sooner than expected.

Hot off the heels of Billboard 200 No.

Lil Wayne's just-released "Tha Carter IV" album could have the second-biggest sales week of the year, as industry forecasters suggest it may sell 700,000-850,000 copies by the end of the

Nicki Minaj crowns the Billboard 200 albums chart for the first time, as her "Pink Friday" set steps 3-1 in its 11th week on the list (45,000; up 18% per Nielsen SoundScan).

Drake  has postponed his entire European tour due to his mother's illness, a representative for the Toronto rapper said.