Blue Ivy goes to Washington!

A ton of stars were invited to Michelle Obama's 50th birthday party in D.C. over the weekend -- but our favorite sighting has to be of Beyonce Knowles and Jay-Z's adorable daughter Blue Ivy.

Bey shared a ton of photos on her Tumblr page on Sunday, giving us a glimpse into her family's VIP tour of the White House.

Not only did they get to check out the impressive Christmas tree at 1600 Pennsylvania Avenue, but they also got a personal meet and greet with the Obamas' new dog, Sunny.

How cute is that photo on the right?!

As for the party itself, Beyonce and John Legend reportedly performed for the First Lady -- and stars like Mary J. Blige, Paul McCartney, Jennifer Hudson, Samuel L. Jackson, Magic Johnson, Gayle King and more were all in attendance.

See more of Bey's personal pics from the eventful weekend in the gallery above!

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