At last year’s White House Easter Egg Roll, President Barack Obama got in on the act. (Bill O'Leary/The Washington Post)

A online ticket lottery opened today for families to enter to receive up to six tickets to the event; be sure to get your names in the pot by Monday, March 5 at 10 a.m. ET, when the lottery will close. More than 35,000 people attend the event each year.

The roll, of course, has become a celeb-studded affair; in recent years, performers have included Justin Bieber and a hair-flipping Willow Smith.

Now in its 134th year, the roll is aimed at children 13 and younger, with up to two adult guardians. Admission is broken down into five time slots, and would-be rollers can rank the times they would most like to attend. The event is held on a weekday — the Monday after Easter — so be sure you put in for your vacay now.

Find out more details, and enter the lottery here. And check out this video from Smith’s 2011 performance.