By Ayaan Ali Pop legend Britney Spears is celebrating her return to the music scene with her first record in eight years – and 25 years since the release of her debut album. The 42-year-old Toxic hitmaker has reportedly been collaborating with singer-songwriter Charli XCX in a bid to dominate the charts once again. The new album is set to be released next year and will feature a new track that has been written by the 31-year-old British singer. Reports suggest Charli XCX spent time in a studio earlier this year to write one of Britney’s new songs, after gaining support from the iconic pop star…