11/19/2012 AT 7:05 PM ET
The Cyrus family has a lot to be thankful for this year.
Miley Cyrus is celebrating her 20th birthday on Friday. Her dad, Billy Ray Cyrus, is starring as slick lawyer Billy Flynn in the Broadway hit musical Chicago. And it looks like (practically) the whole family is together for the occasions.
Photos show Billy Ray – dressed in a tuxedo – his wife Tish and their kids, Miley, 19, Noah, 12, Brandi, 25, and Braison, 18, all posing together backstage at the Ambassador Theater in New York City on Sunday. (Brother Trace is the only one absent.)
“The whole family had a great time,” an observer tells PEOPLE.