The annual star-studded concert series Lollapalooza will return to Chicago's Grant Park this summer ... According to the "Tik Tok" singer's post, the original prop knife "went missing" and ...

The annual star-studded concert series Lollapalooza will return to Chicago's Grant Park this summer ... was not a prop — even though she thought it was at the time. According to the "Tik Tok" singer's ...