Her stretch routine is when standing, if you rub/scratch her flanks, she'll take one hind leg and stretch it straight out behind in midair and hold it there until you stop scratching. It looks like a ballet dancer doing an arabesque. Well, sort of, if you had a ballet dancer with four legs and brown fur . . . I've never done Pilates, so I'm not sure what that sort of stretch looks like.
LulaBelle also has a stretch when she's getting off the sofa. She puts her front legs down on the floor and stretches her entire body with her back legs still on the sofa.