Liam Payne’s sister has spoken out on rumours her brother is expecting his first child with girlfriend Cheryl.

Rumours that Cheryl is pregnant went into overdrive this week after she attended a charity event with a visible baby bump. But despite the evidence the couple are yet to confirm they are about to become parents.

Cheryl and Liam PayneCheryl and Liam (pictured in March) are rumoured to be expecting their first child

On Twitter, Liam’s sister Ruth Gibbins wrote: “Bump or no bump, announced or not, it's completely up to my brother and Cheryl what parts of there private lives they choose to share and when.”

More: Cheryl All But Confirms Pregnancy Rumours As She's Pictured With Huge Baby Bump

Earlier this week The Sun reported that Cheryl had shared her baby news with close friends and family.

A source told the newspaper: “Cheryl has told close friends and family the very exciting news that she is expecting her first child. She is absolutely ecstatic.

“She doesn’t want to speak publicly about it for a number of reasons, particularly due to some of the battles she has gone through in her personal life in recent years.

“Obviously everyone wants to hear it come from her but she is keeping quiet for now.”

More: Did Cheryl's Friend Just Confirm She's Expecting Liam Payne's Baby?

Speaking about Cheryl’s appearance at the Fayre of St James Christmas Carol Concert in London on Tuesday, the source added: “She was proudly showing off her bump and telling everyone how happy she was.”