Victoria Beckham's daughter just found out her mum was a popstar in the cutest way!

She shot to fame as one fifth of one of the world's most successful girl bands.

And now Victoria Beckham has shared the adorable moment her six-year-old daughter discovered a miniature version of her, playing with some Spice Girls dolls for the first time on Saturday, reported the Daily Mail.

Little Harper appears quite mesmerised with the miniature version of her mum - who is now more famous for her fashion empire - dressed in an LBD and with her trademark bob.

"When you find out mummy was a pop star!! Xxx", mum-of-four Victoria captioned the nostalgic Instagram story.

The dolls also show Geri Halliwell in a Union Jack dress, Mel B clad in a leopard print jumpsuit, Sporty Spice in her gym-ready ensemble, and Emma Bunton, dressed in a cute pink frock wearing her hair in pigtails.

In a follow-up message on the service, which allows users to share pictures and videos for a 24-hour period, she hinted that it was the first time Harper had discovered that her mother was in the band.

Harper, the 43-year-old's fourth child with husband David Beckham, was born in 2011, long after the Spice Girls disbanded.

• This article was first published on nzherald.co.nz and is republished here with permission.