On Dec. 2, Britney Spears' fiancé Sam Asghari gave the singer a glittery and floral "B"-shaped cake with a white chocolate heart that says "Happy Birthday Britney" to celebrate her 40th birthday.

Meanwhile, the mom of four was seen in a final video blowing candles out on her giant white unicorn birthday cake as she sat indoors, while her loved ones could be heard singing “Happy Birthday ...