Daydream Sandy has an appearance similar to Sandy, which means that she is either in or out of her suit.
In "Sleepy Time," she appears like her normal out of suit self, but wearing skydiving gear.
Dream Sandy is seen when SpongeBob enters her dream. She jumps from an airplane and tries to land on a target. Dream SpongeBob distracts her enough that she forgets to pull her parachute and ends up falling into a truck. At the end of the episode, her head is among the other dream characters' heads surrounding Dream SpongeBob and yelling at him for ruining her dream.