OP's aunt with Angus Young in the early 80's. This was taken after she went out on stage with AC/DC and just kind of jumped around wearing the iconic schoolboy outfit. :
Costume : r/ACDC
AC DC outfit | Clothes, Edgy outfits, Cute outfits
80s theme. AC/DC. Run DMC. | 80s theme party, 80s theme, Run dmc
Old School 80s on X: "Apr 19, 1980: Brian Johnson joined AC/DC, replacing Bon Scott who had died in February. #80s https://t.co/eMrGyCS0mr" / X
Angus Young ACDC Costume -
AC DC And This Classic Rock Riff That Ignited The 80s | Professor of Rock - YouTube
AC/DC: A Photo Timeline of Their Legendary Career
CA254 School Boy Rocker Angus AC DC Mens 80s Punk Rock Star Fancy Dress Costume | eBay
Brian Johnson Racing on X: "AC/DC regroup for new album: http://t.co/caGtrktUAD | http://t.co/M0Xqf8Bxjw" / X
Classic Rock Bands of the 1970s and '80s, Then and Now