During their On The Run show in Paris over the weekend, Jay Z changed a line in his song Beach is Better from "I replace it with another one" to "Pregnant with another one".

As to be expected, social media went into meltdown over the fact that Blue Ivy, the couple's two-year-old, may soon be a big sister.

Representatives have not confirmed or denied the news, however just two weeks ago Beyonce posted a photo, beer in hand, to her 17 million Instagram followers.

During the two shows in France – which were being filmed for an upcoming television special that goes to air in the US next week – the couple not only performed their greatest hits but also put on a show filled with a plethora of public displays of affection.

Jay Z told the crowd Blue was conceived in the City of Light, a pregnancy Beyonce revealed while performing at the MTV Video Music Awards in 2011.

"We love Paris. It's special to us because we got engaged here and this is where baby Blue was conceived," he said as Beyonce looked on.

"I'm your biggest fan. I love you," she said while wiping away tears.

"Greatest entertainer in the world. I love her. She's my wife," he said.

The couple, who married in 2008, have been at the centre of separation and divorce rumours since Beyonce's sister, Solange, and Jay Z were involved in a fiery altercation in an elevator following the Met Ball in May.

However, Beyonce's father and former manager Mathew claimed the gossip fodder and rumours were merely a publicity stunt.

"Sometimes rumours ignite tours," Page Six reported.

"The Jedi mind trick fools you a lot of times."

He declined to comment on whether the video of Solange attempting to kick Jay Z in the small elevator was staged.

"Everyone's talking about it. Ticket sales went up. Solange's album sales went up 200 per cent."