'If something like fixing your top lip makes you feel confident, then keep doing it.
'He's got an amazing voice, and people should focus on that rather than how he looks. It's his face and his choice - I think he looks great.'
Jessika is no stranger to getting bashed by online for her own surgically enhanced pout. During the filming of the reality show, Jess would regularly come under fire from fans claiming she had injected too much filler into her lips.
'Society has gone down the s***ter,' she continued.
'If it wasn't his lips, it would be something else. No one is building anybody up these days. Let's do a complete 360 on that.'
Last month Jack – who won Australia’s Got Talent at the age of 14 – finally confessed to having lip injections after fans relentlessly questioned his altered appearance.
'I've never had plastic surgery or any surgery, it’s pretty obvious I have had my lips done with fillers,' he told The Daily Telegraph.
Luckily, Jack appears to see the funny side of things, even reposting a meme comparing him to Jessika.