◎专辑和单曲销量各达破亿门槛流行女王2015最新专辑之热身先发单曲 ◎邀请呛辣饶舌新妹Iggy Azalea火辣合唱，正翻全球41国iTunes冠军 ◎雅虎音乐力挺「夏日之歌」 从美国新世代歌坛甜心代表，到自立自强表态女性新主张的Britney Spears，全面征服流行界，一路站上电音女神席位，专辑和单曲的各自销售量，全球均达到破亿门槛，抱回葛莱美礼讚、包括「终身成就」在内，共6座MTV音乐录影带奖，坐上美国史上最畅销女歌手排行第8位，立足告示牌史上唯一拥有6张攻顶专辑的女艺人。入籍富比士「全球最具影响力的百大名人」、告示牌「2000年代最佳艺人」、滚石杂志「史上顶尖25位最具突破青少年」、VH1频道「音乐史上百名伟大女性」等名单。2013年发行第8张个人专辑《Britney Jean》不久，随即宣布签下为期2年的赌城驻唱华丽秀《Britney：Piece Of Me》，趁著空档之馀，进录音室筹备第9张大碟，率先送上先发单曲〈Pretty Girls〉，让Britney再次跃登国际各大新闻媒体版面，成为2015年的头号大事件！ Britney邀请心仪许久的呛辣饶舌新妹Iggy Azalea超火合唱，Iggy强势佔据XXL嘻哈杂志评选「10大最佳新人」的首位非美国籍饶舌歌手，以〈Fancy〉以及助唱Ariana Grande的〈Problem〉两首单曲，追平The Beatles同一时间登记排行榜冠亚军的傲人成绩！由〈Fancy〉的幕后团队联手撰写/製作，葛莱美提名的三人组The Invisible Men(Jessie J、Sugababes)操刀，和〈Fancy〉有著异曲同工之妙，推动时髦流行Electro-Hop和Trap风格。Britney X Iggy驾到，美艳无人能挡，一首属于美眉们的欢乐国歌，即将称霸世界、热翻舞池，雅虎音乐力挺：「夏日之歌」，告示牌初登场空降第29名。 Britney Spears comeback single is a fact, and she’s ready to slay all your faves and make clear who is the real pop princess once again. But, this time, she returns with the collaboration of Australian and Grammy nominated rapper Iggy Azalea upcoming single “Pretty Girls“. The first news about this collaboration were confirmed during backstage’s interview at Kiss 108’s Jingle Ball when Azalea said that a new single with Britney will be released early 2015. The song was written by English pop group Little Mix. It was previously announced as one of the registered tracks from Little Mix’s upcoming album, and it features extra credit from Iggy Azalea. After the raised expectations, Azalea confirmed that she had not recorded any songs with Little Mix. Therefore, everything fits perfectly, confirming that she just made the rap part of the song, and eventually this track has finally been recorded by Britney. “Pretty Girls” was written by George Astasio, Maegan Cottone, Perrie Edwards, Jesy Nelson, Jade Thirlwall, Leigh-Anne Pinnock, Amelia Kelly Amethyst, Jason Pebworth and Jonathan Christopher Shave. According People.com, the highly-anticipated new single will be released on digital retailers on 5 May 2015. The music video was co-directed by Cameron and Ale with Iggy Azalea, and it was filmed on 9 and 10 April in Los Angeles. Azalea confirmed during a Twitter Q&A on 14 April 2015 that it will be a live performance of the single. Rumors suggest that it will be in the 2015 Billboard Music Awards on 17 May.