On July 17, several birthday party photos were shared on William's Instagram with the caption, "I successfully completed my first birthday party during the weekend~~. It was an extra happy birthday because my dongsaeng Dding-dong�was with me.. I appreciate everyone who came."

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As you can see, William looks extremely happy and excited dressed in hanbok for the special day.�You can also spot William's grandma who flew all the way over from Australia.�

Meanwhile, Sam Hammington's family recently announced that baby #2 is on the way.�