|Mark Von Holden/WireImage|
The actress and singer’s date for the evening? Two-year-old son David Daniel!
Hudson, who has lost 80 lbs., says she decided to kick-start her weightless when she realized no one could tell she was expecting a baby.
“I thought, hold on – why doesn’t anybody know I’m pregnant?” she admits.
“And I wanted to set a good example for my son.”