The singer, 39, who is expecting the couple's first child, wrapped up in a huge white duvet coat which she wore over her figure-hugging satin and lace dress.
The songstress, 39, who already shares four-year-old son Arthur with ex-husband Caspar Jopling, partied at a 1970s themed bash inspired by Apple TV's retro comedy Palm Royale.
The pregnant singer, 39, who is expecting her and boyfriend Beau Minniear's first child, saw immediate success when her 2010 debut album landed at No.1 on the UK Album Charts.
The singer, 39, revealed she is expecting a child with actor Beau, 28, as she walked the red carpet heavily pregnant at the Fashion Awards in early December.
The pregnant singer, 39, who is expecting her and boyfriend Beau Minniear's first child, made the comments during an appearance on Sports Illustrated model Brooks Nader's reality show.
The singer, 38, revealed she is expecting her first child with her boyfriend Beau Minniear, 28, as she walked the red carpet heavily pregnant at the Fashion Awards two weeks ago.
The singer, 38, shared last week she's expecting her first child with her boyfriend of six months, her second overall as she already has son Arthur, four, with ex-husband Caspar Jopling.