Anna Trebunskaya - Celebrities and their professional dance partners at the 'Dancing with the Stars' dance studio for rehearsals at DWTS rehearsal studio - Los Angeles, California, United States - Friday 18th September 2015 (2 Pictures)
View All: 'Dancing with the Stars' rehearsals
Next Anna Trebunskaya Slideshow: 10th Anniversary Of "Dancing With The Stars" Party - West Hollywood California United States - Tuesday 21st April 2015
The acclaimed performer had just cancelled touring due to a battle with cancer.
Many ticket-holders couldn't get into the O2 Arena show on Tuesday night (September 19th) because they didn't bring photo ID to match their booking.