The Waiting to Be Heard author announced on Twitter on Tuesday that she had decided to open her Instagram up to the world, writing, "What's happening? Well, I made my Instagram public. No more hoarding all my amazing cat videos."
Knox became a household name during a years-long investigation into the 2007 death of her roommate, Meredith Kercher, in Italy. The Seattle native's murder conviction was overturned by Italy's highest court in 2015.
Many of Knox's posts reference her work with the Innocence Project working to free innocent prisoners and those wrongfully accused. In April, she posted a selfie of herself wearing a shirt reading, "It could happen to you."