Def Jam star Rihanna has landed her 4th #1 on the Billboard Hot 100 this week with 'Disturbia'. According to Nielsen Soundscan, the track jumped from #3-#1 this week, leap-frogging rumored boyfriend Chris Brown's 'Forever' which remains at #2 for a second week.

It's interesting to note that 3 of the 4 of the 20 year old's US #1's have been from her most recent LP 'Good Girl Gone Bad'. This is a very good look. Ri-Ri is really doing her thing. This is such a loooong way from "Pon De Replay"