To welcome Canadian Prime Minister Justin Trudeau, his wife Sophie Grégoire-Trudeau, and their three young children to the United States, it only makes sense that the First Lady and President would invite their coolest Canadian friends to a state dinner. On Thursday, Michelle — dressed in a custom navy blue and floral strapless gown from Jason Wu (the same designer who made her inauguration dress in 2008 — Barack, Sasha, and Malia Obama welcomed Sara Bareilles, Sandra Oh, Michael J. Fox and his wife Tracy Pollan, and more prominent people from the Great White North. Blake Lively, who wore a silk robe-like look from Ralph & Russo, accompanied her Vancouver-born husband Ryan Reynolds (clad in Burberry) to the event.