Singer took to twitter to tell fans, "The altitude just got to me".
Singer also sported a bold new hairdo at the Teen Choice Awards in Los Angeles.
"People criticising what we call mumble rap have the issue with Kendrick Lamar".
Incident took place on 9 August at Planet Hollywood where Spears performs her Piece Of Me residency.
R&B singer shocked fans in 2013 with newly bulked-up body after embarking on intense workout regime.
Keke Palmer has jumped to Brandy's defence, claiming the singer is being wrongfully "slandered".
Sheeran's brief appearance earlier in season seven was widely panned by critics and viewers.
Samsung Gear VR owners can experience tepid pop tunes like never before from 17 August.
The Basque Institute for Women is not a fan of this summer's hit tune.
Nothing Compares 2U hit maker shared a troubling video message with fans on Facebook on 4 August.
Oasis rocker made the blunder when discussing the music his children liked during recent interview.
Payne, 23, launching his solo career, but still wants to perform 1D's last album Made In The AM.
Reports also claim that Malia, 19, lost her phone at the Grant Park festival in Chicago.
Smith, 48, gatecrashes a wedding party and runs through hits like Summertime and Boom! Shake The Room.
Drama revealed in lawsuit after Gaga was sued by unknown songwriter Rebecca Francescatti over Judas.