Miley Cyrus was "bored as hell" before her Washington, D.C. show Monday.

The 21-year-old singer performed in the US capitol and was joined on the road by her younger sister, Noah Cyrus.

Not long before going on, Miley was goofing off with her sibling, sharing a photo of herself on Twitter rolling on the floor while Noah balanced on her sister's feet.

"Backstage bored as hell with @noahcyrus," Miley wrote.

The singer shared another snap of herself with a dancer behind-the-scenes as she played make-up artist.

"Gettin ready to hit the stage in DC! Just doing a last minute @eos touch ups on @freakabritt," she shared.

Miley is getting ready to hit the road for her Bangerz World Tour.

The trek is scheduled to kick off on February 14, 2014 with a show in Vancouver, before moving to the US, other parts of Canada and Europe.

Miley recently admitted she's feeling anxious about the stage shows, however, and is having "meltdowns" about making sure she entertains fans.

"I'm ready to be on tour already. I wish I could skip past all the tours and all the rehearsals and all that and how many meltdowns 'cause I get very anxious," she told MTV News last month.

"It keeps getting better and obviously I'm excited about my tour. I get nervous that I'm gonna get there and no one's going to show up, but hopefully some people show up."