BBC News:- Britney Spears has announced her engagement to her long-term boyfriend, Sam Asghari. The singer posted a video of the couple showing off the ring on Instagram. Spears is fighting a legal battle to end her 13-year conservatorship, which controls both her personal life and finances. She revealed that the terms of the arrangement were preventing her from marrying Mr Asghari or having more children. The conservatorship arrangement was imposed in 2008 when concerns were raised over the singer's mental health. Twenty-seven-year old Asghari, who is a personal trainer and actor, posted a separate photo of the ring and