It was "a quiet gathering of friends and mostly family," said Hudson's longtime friend, singer and actress Felicia Fields. "They're really trying to keep it kind of quiet. It was a nice time that we had."
Asked if Hudson, 27, received blue or pink gifts, Fields told the paper, "They don't know [the gender]. More yellow."
The Oscar-winning Dreamgirls star -- who is engaged to I Love New York 2 contestant (and Harvard Law grad) David Otunga -- told Access Hollywood earlier this year: "I definitely want a family. You know, I'm almost 30 now, so they gotta get started sometime."
As for the wedding, she even plans to include her three dogs -- Oscar, Grammy and Dreamgirl -- in the ceremony.
"Oscar might be the ring bearer," said the American Idol alum, who recently finished a tour with singer Robin Thicke. "We'll send them down the aisle with a little tux."
Although she hasn't announced a date, Hudson told USA Today she wants her wedding to be "traditional, and very, very classy. I'll be surrounded by family and friends. I hope that when I'm 80 years old, people will still be talking about my wedding."
The baby news comes seven months after the tragic deaths of her mother, brother and 7-year-old nephew, who were murdered last October. Hudson took time off and returned to the spotlight on Feb. 1 when she sang the national anthem at the Super Bowl.