The Simpsons get stamped!

America's favourite dysfunctional family, The Simpsons, is set to appear on postage stamps.

The Postal Service has announced that the 44-cent first-class stamps, designed by show creator Matt Groening, will feature the cartoon characters of Homer, Marge, Bart, Lisa and Maggie Simpson.

"The timing couldn't be better as we celebrate the 20th anniversary of the show," The New York Daily News quoted Elie Dekel, executive vice president at Fox, as saying.

Fox has been broadcasting The Simpsons since 1990, making it the longest-running prime time comedy in television history.

The milestone is being marked with a series of events titled "Best. 20 Years. Ever."

The Postal Service will preview the stamps on the morning of April 9.