As you may know, Adam & Matt have been trying to rebuild Holly's singing career with live on air singing challenges of some well known songs.
The boys attempts may actually be working, as she performed on the Telethon stage at the Perth Convention & Exhibition Centre in the early hours of Sunday morning.
Singing a rock version of the Whitney Houston classic "I Wanna Dance With Somebody," Holly danced her socks off with her band, helping to keep the crowd awake as the total amount raised for Princess Margaret Hospital kept ticking over.
Holly also joined the panel later that night, wearing a shirt specifically designed for the event...
You can watch Holly perform her version of "I Wanna Dance With Somebody" below, and don't forget to donate to Telethon!