How many times a year do you have an event with a guest list as varied as President Barack Obama, Academy Award winner and Hollywood "It-Girl" Lupita Nyong'o, "Modern Family" star Sofia Vergara, Andrew Luck of the Indianapolis Colts, and New York Sen. Kirsten Gillibrand?

Just once.

This Saturday is the night when the political glitterati mingle with Hollywood stars and the annual White House Correspondents' Association Dinner. Sometimes called "Hollywood for ugly people," the nation's capitol will play host to the dinner (also known as "Nerd Prom"), which is one of Washington's most sought-after invites of 2014.

Here's a look at some of the hottest celebrities coming to Washington this weekend:

Academy Award winner Lupita Nyong'o will be attending the event as a guest of Time magazine. After she won an Oscar for her performance in "12 Years a Slave" this year, Nyong'o has become Hollywood's new it-girl: in April, the Academy Award winning actress was named "Most Beautiful Woman" by People Magazine.

(Francois Duhamel/fox Searchlight/AP Photo)

Along with her, Oscar-nominated "12 Years a Slave" director, Steve McQueen, "Gravity" director Alfonso Cuarón "The Lone Ranger" actor Armie Hammer, Vanity Fair reports.

ABC has invited "Modern Family" stars Sofia Vergara, Eric Stonestreet and Jesse Tyler Ferguson who will be joining "Nashville" star Chip Esten, as well as "Scandal" actors Tony Goldwyn, Bellamy Young and Darby Stanchfield.

(Fred Lee/ABC)

Scandal's Scott Foley is confirmed as a guest of People and will be sitting at their table along with "What To Expect When You're Expecting" actor Joe Manganiello and skier Lindsey Vonn, according to New York Daily News.

The Huffington Post table will be hosting "Perfect Pitch" and "Cups" star Anna Kendrick, along with The Roots rapper Questlove, Seattle Seahawk Richard Sherman, Frozen's Kirsten Bell.

Richard Shotwell/Invision/AP Photo

Frozen's Josh Gad was invited to join USA Today's table together with "Slumdog Millionaire" star and it-girl Freida Pinto, actor Jeff Goldblum, singer Jessica Simpson, as well as Taylor Schilling and Uzo Aduba of "Orange Is the New Black."

CBS invited "Her" director Spike Jonze, country star Brad Paisley, "The Good Wife's" Julianna Marguilies and "Conga" singer Gloria Estefan. "Duck Dynasty's" Willie and Korie Robertson will be attending the WHCA dinner as guests of A&E.

"House of Cards" Robin Wright is the featured guest at the Capitol File welcome reception on Friday, ahead of the dinner on Saturday , as Politico reports.

Glee's Darren Criss,"300? actor Jack O'Connell and ABC "Revenge's" Madeleine Stowe will also be seated at tables hosted by Thomson Reuters, along with athletes Andrew Luck of the Colts and Adrian Peterson of the Vikings.

Former "Gossip Girl" star Chace Crawford, "Glee" actor Matthew Morrison, "Dallas Cowboy" Tony Romo and NSYNC singer JC Chasez are also slated for Washington's most glamorous night, according to Politico's Judy Kurtz.