Britney Spears has taken to her Twitter account to assure fans she's OK following a scare on-stage in Vegas during her 'Till The Worlds End' routine which saw her ankle seemingly give out and her collapse to the floor.
This isn't the first problem the mother-of-two has suffered with her legs, after suffering an injury that required surgery over 10 years ago, back in 2004.
Despite that she continued on with her career and has more recently had her residency in Las Vegas extended due to huge numbers of sell-out shows.
Meanwhile, Britney has teamed up with Iggy Azalea for "classic girly song" 'Pretty Girls', which the pair are to perform at the Billboard Music Awards on May 17 - Spears' first major awards show performance in eight years.
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