Williams had tweeted a photo out of her bare baby bump and asked fans whether they thought she was expecting a girl or boy.
Straight away, Willoughby said she thought it was a girl, then demonstrated her “theory” on guessing the gender of babies.
“You see the shape of your hand if it goes in like that it’s a boy,” she explained on ‘This Morning’ on Wednesday 28 June, holding her hands on each side of her stomach.
“So if it goes in at the bump it’s a boy and if it goes out there then it’s a girl.”
“As I’m looking at the picture, she looks like she’s going out there,” Willoughby continued.
“It’s hard to tell in a photo but if you’re pregnant at home do it, I tell you, it’s always right, it’s that shape.”
So what do you think? Can you tell by looking at Williams’ bump that it’s a girl?
Williams revealed in April 2017 that she “accidentally” announced she was pregnant by sharing a photo on Snapchat.
“I was just saving them (for myself). I’ve been so good about it, but this was the one time it slipped.”