In the photo, Spears stands in front of a window with her golden locks falling around her face.
She's donning a gingham crop top that prominently displays her fit stomach and shoulders, and a bright red skirt.
When she's not busy posting flashback posts, one of Spears' favorite Instagram past-times is putting on homemade fashion shows, and, yes, they are as great as they sound.
Take this one, for example. Rocking three different looks, she twirls and stuns in each one. The first is a white, long-sleeved, backless number that is dangerously short and shows off her gorgeous legs.
The second is a cowgirl-style outfit, complete with ripped jeans, cowboy boots, a white crop top that shows off her fit midriff, and a cowboy hat.
The third and final outfit is a short, sleeveless, green dress that hangs on by one shoulder, showing off those fit arms of hers.