STOCKHOLM, SWEDEN - SEPTEMBER 09: Prince Oscar attends the christening of Prince Alexander of Sweden at Drottningholm Palace Chapel on September 9, 2016 in Stockholm, Sweden. (Photo by Luca Teuchmann/WireImage)

STOCKHOLM, SWEDEN - SEPTEMBER 09: Prince Oscar attends the christening of Prince Alexander of Sweden at Drottningholm Palace Chapel on September 9, 2016 in Stockholm, Sweden.  (Photo by Luca Teuchmann/WireImage)