Jen Buckley was enjoying a day at the Burlington Mall, doing some shopping for her 40th birthday.

As she turned the corner, walking toward the Nordstrom department store, she could sense something was a bit off, and as she noticed more and more friends clad in the same black and pink t-shirts walking casually out of the woodwork she realized for certain, her world was about to get rocked.

Indeed, music quickly started blaring throughout the corridor, and a crowd of onlookers, who had gathered minutes beforehand, cheered on Buckley's 40 closest friends as they took over the mall with a dance routine, which left her speechless and ensured this would be a birthday she wouldn't soon forget.