John Stamos Congratulates Mary-Kate Olsen on Her Marriage With an Adorable Throwback Photo

Even though Mary-Kate and Ashley Olsen won't be returning for Fuller House, the upcoming Netflix reboot of the classic show, John Stamos has nothing but love for his onscreen nieces. The actor took to Instagram on Monday to congratulate Mary-Kate on her recent wedding with an adorable throwback picture, writing, "'In the blink of an eye.' Congrats MK. X." The fashion designer married her boyfriend of three years, Olivier Sarkozy, on Friday in a private ceremony in Manhattan. See John's post above, and then check out the Full House cast's cutest pictures together.