Candace Gertrude Flynn is the older sister of the brother namesakes of Phineas and Ferb. She is the biological sister of Phineas Flynn and the stepsister of Ferb Fletcher. She is voiced by Ashley Tisdale (From The Suite Life of Zack & Cody and The High School Musical franchise).
In "Lawn Gnome Beach Party of Terror". See Phineas and Ferb#Episode 2 for group shots
"Lights, Candace, Action!"
"Candace Loses Her Head"
"Jerk De Soleil"
"The Ballad of Badbeard"
"Boyfriend From 27,000 B.C."
"The Lake Nose Monster"
"Interview With a Platypus" has Candace with one red sock feet for half the episode.
"Backyard Aquarium" musical number "When will he call me?" has a quick shot of Candace barefoot when a giant phone crush into her, resulting in her being knocked off her shoes and socks, then when she is seen with multiple feet when she is holding phone.
In "Gaming the System". See Phineas and Ferb#Episode 58 for group shot.
From "De Plane! De Plane!", see Phineas and Ferb#Episode 61 for shots of her with others.
"Oh, There You Are, Perry"
"Spa Day", see Phineas and Ferb#Episode 71 for group shots
"Atlantis" has Candace in other group images at Phineas and Ferb#Episode 83
In S2E53 "Phineas and Ferb Hawaiian Vacation" while in Hawaii, Candace switches from sandals to bare feet back to sandals
"Nerds of a Feather"
She was also briefly barefoot during the song "Ducky Momo is my Friend". It shows her as a child having Ducky pick out her clothing.
Episode 111In "Make Play"
In "Run, Candace, Run" a quick shot of her red sock feet are shown when she mistaken put on the unstable prototype running shoes.
"Mommy Can You Hear Me?". Candace is barefoot in bed after breaking her right foot and tries desperately to get outside to tell her mother about her brothers' doings.
"Escape from Phineas Tower"
In "Tri-Stone Area", Candace is known as Can-Tok.
In "Doof Dynasty" Candace, during ancient feudal China, is wearing sandals that expose her toes and heels.
In "The Mom Attractor" Candace is seen wearing sandals while wearing her swimsuit in the backyard.
In Both "Sci-Fi Pie Fly" and the Musical Number "Non Reaction" Candace seen is wearing her robe and slippers that expose her bare heels when she decide to take a "ME" day from busting her brothers.
In S3E56 "Where's Perry? (Part Two)", Candace gets lost in Africa and takes on a Tarzan-like appearance while living with monkeys. She goes barefoot and battles evil robotic clones of the main cast that way.