Eagle-eyed social media users spotted something amiss on the Darwin-born songstress' feed earlier today as it appears she has deleted all posts to date.
The move is sure to baffle fans as Jessica boasts a significant following of 326,000 and is usually active on the photo-sharing platform.
The revelation comes just weeks after Jess shared a rare photo with long-term boyfriend Themeli Magriplis to her Instagram story.
In the shot, the talented vocalist was seen tenderly kissing her beau on a beach.
The pair are high-school sweethearts who have been dating for the last decade, and Jess previously told WHO she knows they will "get married and have children in the future".
"The love is great. The connection is great," she added.
Engagement rumours swirled last November when 29-year-old Jessica was photographed sporting a massive diamond ring on her left hand walking the red carpet of the 2018 ARIA Awards.