Destinee and Paris Monroe give a cheerful wave as the duo leave BOA Steakhouse on Monday (August 8) in Los Angeles.

The singing sisters looked effortlessly cool in basic black.

Hours before, the girls also matched in cool blue dresses when they attended the 2011 Teen Choice Awards.

Destinee and Paris will soon be joining Britney Spears for her Femme Fatale tour!

“Counting the days 4 @britneyspears Femme Fatale Tour! fittings w/ r stylist & designer & dinner mtg w/ r amazing managers luv ya @Dude_Br0,” Destinee tweeted.

10+ pics inside of Destinee and Paris…