The Sound of Music’s Gretl von Trapp actress Kym Karath is unrecognisable 56 years on from role that shot her to fame

IT'S been a whopping 56 years since we were first introduced to The Sound of Music, a musical movie filled to the brim with songs we all still remember fondly.

The classic film stars Julie Andrews as Maria Augusta, a nun-in-training, who leaves the convent in order to become a nanny for a wealthy family.

Shortly after arriving at Captain Von Trapp's huge home, she is introduced to his seven children, who end up becoming her step-children after Maria and the Captain later fall in love.

The Von Trapp siblings consist of five daughters and two sons; Liesel von Trapp, Friedrich von Trapp, Louisa von Trapp, Kurt von Trapp, Brigitta von Trapp, Marta von Trapp, and the youngest of the bunch, Gretl von Trapp.

The adorable blonde child was played by Kym Karath, who was seven years old at the time.

Despite her being the movie's youngest star, she definitely wasn't a new face to acting, and had worked alongside Henry Fonda in Spencer's Mountain at the tender age of three.