No one suspected Irina Shayk's baby news at the Victoria's Secret fashion show

A source told PEOPLE: "Looking back, some of her outfits were less revealing in the stomach and seeing the news after the show, it made sense. No one suspected backstage, that’s for sure! She looked as beautiful as ever."

The report comes after Irina - who has yet to confirm her pregnancy - recently revealed she wants children sooner rather than later.

She said: "I think family is the reason why we are here. I love my job and it's very important to me. I really enjoy what I'm doing but it's not the most important thing in my life - family is, friends, people who I love.

"My father was married to my mother for more than 20 years and, yes, definitely one day I want to have a family because that is the most important thing on this earth. I don't think there is a perfect time. I think it's more important to have the right person by your side.

"My sister had her baby when she was 22, and for her that was the perfect time. I will be 31 in January, so maybe soon it will be my perfect time. I don't know - time will tell."

And Irina believes she is "romantic" at heart but thinks it is more important for men to be that way inclined than women.

She added: "I would say that I can definitely e romantic and I think that it's very important. But as far as I am concerned, it's even more important for guys to be romantic than girls."