Bio:

Poor Scootaloo went through a great amount of hell of her life. First, her parents dead when she was a baby and she left in the care of her two aunts. Then, when she was five, her aunts got killed in a car crash, leaving the poor girl all alone. Despite having her friends (Apple Bloom and Sweetie Belle) as having a sister figure (Rainbow Dash), the filly longed for some loving and supportive parents. Things only got worse when she was ten, the house was knocked down. While Scootaloo thankfully got out just in the nick of time, she was now homeless and had no living relatives. Fortunately, there was a silver lining. While seeking shelter from a storm, she came across the home of Bow Hothoof, Windy Whistles and Rainbow Dash. The trio were surprised to see her until Scootaloo told about her sad life. Feeling sorry for the child, Rainbow’s parents decided to adopt Scootaloo and make her their 2nd daughter (Much to both Rainbow and Scootaloo’s delight). Now, Scootaloo is as happy as can be, she enjoys her new home with her new mom (Windy), new dad (Bow) and new official sister (Rainbow).

Outfit on the left: Yellow jacket, a gift from her mom.

Outfit in the middle: Fall Formal Dress (With Cutie Mark)

Outfit on the right: Yellow jacket with a skirt (Similar to Rainbow's skirt -----> https://derpibooru.org/images/1490169)

Note: My Little Pony: Equestria Girls Digital Series, Forgotten Friendship and Holiday Unwrapped are not canon.