The two Little Mix stars - who are joined in the band by third member Jade Thirlwall - are both currently expecting their first children, and Perrie has revealed they burst into tears when they discovered they would be journeying into parenthood at similar times.
Perrie, 27, explained, "We were on a work Zoom (video call) and we were chatting about things that were coming up in our schedule because in Little Mix we are blocked out two years in advance."
"I was thinking, 'I won't be able to do that.' I messaged my manager and she called me and said, 'You're pregnant.' "
"I was like, 'How do you know? And she said, 'Because I am pregnant.' Then she said: 'Can I add someone to the call.' "
"I just heard this voice that said: 'Perrie! You too!' And then we just cried our eyes out. What timing! It wasn't planned."
The "Confetti" hitmakers also detailed their pregnancy cravings, which include prawn sandwiches and sour candy.
Leigh-Anne - who is expecting a baby with her soccer star fiance Andre Gray - said, "Prawn sandwiches but the M&S kind and Frazzles."
While Perrie, whose boyfriend is soccer ace Alex Oxlade-Chamberlain, added in an interview for TikTok, "Mine is Toxic waste, you know the barrel. All I wanted was sour. But I loved it. Brain lickers, juicy drop pops - anything sour. That was when I was feeling really sick but I feel fine now."