Louis' five-month-old sibling enjoys being photographed

Louis Tomlinson‘s youngest sister Doris looks like a very happy baby.

The One Direction singer’s future stepdad Dan Deakin – who’s engaged to his mum Johannah Poulston – shared an adorable snap of himself with Doris on Saturday.

The sweet selfie sees Doris lying on a sofa and giggling at the camera in an adorable printed all-in-one while Dan, 31, sits next to her smiling.

‘Morning! ,’ Dan captioned the shot.

Johannah re-Tweeted the picture and wrote: ‘Two of my fav people .’

Dan and Johannah welcomed Doris and her twin brother Ernest in February.

Aside from Louis, 22 –¬†whose dad is construction worker Troy Austin – and the newborns, Johannah also has girls Lottie, Fizzy, Daisy and Phoebe with ex-hubby Mark Tomlinson.

She clearly didn’t want Ernest to feel left out of the Twitter fun as she posted a super-cute photo of him wearing a Baby-gro with his name printed on it yesterday.

‘Thank you Kelly for my vest Love Ernest xxx,’ Tweeted Johannah.

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Anna Duff