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.

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.

Singer (and likely San Francisco crowd) startled after prop abruptly descends a few feet during "Roar" performance