The pair last collaborated on 2004 single 'Hollaback Girl'
Singer was joined onstage by fellow NERD member Shay Haley at gig
Song has overtaken Robin Thicke's 'Blurred Lines', according to new data
The Vivienne Westwood creation was sold at auction and will be shown in Washington DC's Newseum
The singer appeared on the cover of Elle UK magazine in the headgear
The director will film Pharrell's performance on June 3
Singer responded to arrests on Facebook saying it's 'beyond sad'
Williams says that the Gnarls Barkley man's version 'burns' his own
Producer and singer is working on a project titled 'Inspiration'
The promo features a cameo from Kelly Osbourne
The singer began crying during a montage of fan-made videos for hit single 'Happy'
Muse, Solange, QOTSA, Chvrches among artists who perform at the US festival
The station's flagship annual music event will take place on May 24 and 25
The Future Music Festival was due to feature acts including Pharrell, Chase & Status and Rudimental
But Williams' 'Happy' is replaced by Route 94 as No 1 single
The singer discusses Robin Thicke collaboration and new album 'G I R L'
US singer's second solo effort on course for top spot in Official Albums Chart