Princess Janessa is a character in the 2006 animated film, Barbie in the 12 Dancing Princesses. She is the tenth daughter of King Randolph and the late Queen Isabella. Janessa is the eldest of the triplets, the other triplets being Kathleen and Lacey, and they turn 5 years old in the movie. Janessa is interested in bugs, and she loves to collect them. She refers to three by name at the start of the film: Thomas, Richard and Harold.
She is voiced by Britt McKillip, who also voiced baby Lola Bunny in Baby Looney Tunes, Peppermint Girl in Barbie in the Nutcracker, Princess Melody in Barbie as Rapunzel, Princess Rita in Barbie as The Island Princess, and Princess Cadance in My Little Pony: Friendship Is Magic.
Janessa acts like the leader of the triplets, because she is the eldest triplet. She is very close with Kathleen, and wants to protect Lacey. She looks the most obedient from all twelve princesses. She is very sweet and gentle. She loves collecting insects and is fond of them.
Janessa has dark brown hair and dark blue eyes. Her princess and ballet dresses are aquamarine blue. When she wears her ballet dress and the Rowena's gray dress, she wears her hair in a bun; in other cases her hair is untied. She also resembles her mother like her elder sister Ashlyn.
The top part of Janessa's day dress is pale blue and the sleeves are short and puffy. There is a band around her waist with a flower on it, and her skirt is blue and white. She wears white tights and light blue dancing shoes so she can dance with her sisters. Janessa wears the same nightdress as all of her sisters. It is long and white with long sleeves and it is floaty. Rowena makes Janessa and her sisters wear a gray dress. She also has to wear her hair in a bun with a gray band. As all the sisters look the same, their individuality is taken away from them.
Janessa's ballet dress is like her day dress, but shorter. She wears her hair in a bun with a purple band with this dress. When Janessa was the bridesmaid for Genevieve and Derek's wedding, her dress is similar to her day dress but the colors are different. She has her hair out and the dress is white at the top. The skirt is very pale yellow and her dance shoes are white.
- Janessa's favorite gem is the aquamarine.
- Janessa's favorite flower is the jonquil.
- She shares her name with Janessa from Barbie Presents Thumbelina.
- She has a caterpillar named Harold.
- She is the first princess shown in the movie.