The “Part of Me” singer was in San Francisco on Friday night performing as part of her Lifetimes Tour, when a giant butterfly prop she was riding malfunctioned as it hung suspended over the crowd.

In a heart-stopping moment at her San Francisco concert Friday, Katy Perry experienced a terrifying incident when her massive butterfly prop suddenly plummeted several feet while she was perched atop it!

Perry is currently touring in support of her latest album, 143, which reached No. 6 on the Billboard 200. Her next show is scheduled for Monday (July 21) in Seattle, followed by shows in Canada, Europe and South America. The trek, which launched in late April, is set to wrap in early December.