Others simply couldn't get over how cute the former Neighbours star was.
"Aww my heart just melted," one fan wrote.
"So sweet little Delta," wrote another.
One also commented: "Gorgeous baby now a beautiful lady. Amazing voice I'm sure even back then."
Delta sure does love a good throwback picture.
In another #StopAndRewind picture, The Voice judge shared a photo from 15 years ago with Game Of Thrones star, Jason Momoa.
"Hawaii, 2005: We were filming a US show called North Shore. I’m pretty sure this was a karaoke bar?!" she captioned the photo.
"Absolute blast with this down right awesome, kind human @prideofgypsies. I remember work by the ocean and lots of fun nights on the beautiful town. One of my dearest @lalitha_selvendra took this photo who worked on Neighbours with me came over from Oz to be there during filming and now we have fun memories from that trip!"
Delta has been using her musical talents for good from isolation.
Along up with the nurses at St Vincent's Hospital, the songstress performed a rendition of her song, Together We Are One in honour of International Nurses Day.