5 Seconds of Summer star Luke Hemmings has become a father for the first time

5 Seconds of Summer star Luke Hemmings has become a father for the first time.

The 29-year-old singer took to Instagram to share the news that he and his wife Sierra Deaton had secretly welcomed a daughter together.

They captioned the post, which featured blurry photos of the baby: "Our best kept secret. Written and Produced by Sierra and Luke Hemmings."

Luke explained why the couple - who are thought to have married in 2022 - had chosen to keep their happy news a secret in the comments.

He said: "In our perfect world, we'd keep our daughter a secret forever... for similar reasons we chose to never share our wedding photos from years ago.

"However, going into this next album cycle I'm very aware that her existence would inevitably leak."

The Australian musician continued: "To avoid any speculation, we're posting this now and humbly asking for everyone to respect her privacy.

"If you see us in public, please avoid taking or sharing photos of her as we don't plan on publicising her name, birthdate, or face any time in the near future.

"Thank you for understanding and for the support. All our love, The Hemmings."