<p>The most famous birthday celebration for President John F. Kennedy took place on May 19, 1962, at Madison Square Garden. Held as a Democratic Party fundraiser, the star-studded gala drew about 15,000 attendees. The highlight was Marilyn Monroe’s sultry rendition of “Happy Birthday,” followed by performances from Ella Fitzgerald, Maria Callas, and Peter Lawford. Kennedy was also presented with a multi-tiered cake bearing the presidential seal.</p>

<p>U.S. President John F. Kennedy (with his back to the camera), U.S. Attorney General Robert Kennedy (far left), and actress Marilyn Monroe, on the occasion of President Kennedy's 45th birthday celebrations at Madison Square Garden in New York City. Arthur M. Schlesinger, Jr. is at the far right. Facing the camera in the rear appears singer Harry Belafonte.</p>

Happy Birthday, Mr. President