To kick off the celebrations, the Queen's hologram was projected on a 260-year-old gold state coach led by white horses through Central London. The celebration had some 6,000 performers, including pop singer Ed Sheeran.
While some found it fascinating and amusing, others on Twitter weren't impressed by the hologram and they were rather confused about the fact that the crowd actually waved back at it.
Both the virtual clip displayed on the carriage's window and the carriage itself, were from the Queen's coronation from 1953. The clip showed a 27-year-old Queen waving at the crowd.
The Queen, however, appeared at the balcony at Buckingham Palace along with her family briefly, but Twitter was more focused on her virtual appearance than her real-life appearance. This is what they had to say: