Princess Delia (simply known as Delia) is one of the supporting character in the 2006 animated film, Barbie in the 12 Dancing Princesses. She is the fourth daughter of King Randolph and the late Queen Isabella, and she has eleven sisters. Like her sisters, Delia loves to dance and, sports especially croquet and horseback riding.
She is voiced by Kathleen Barr, who also voiced Elizabeth Drosselmayer and The Owl in Barbie in the Nutcracker, The Fairy Queen and Marie in Barbie of Swan Lake, Serafina in Barbie as the Princess and the Pauper, Shiver, Cloud Queen Rayla, and Eric in Barbie and the Magic of Pegasus, Tiny in Barbie as The Island Princess, Rayna in Barbie: Mariposa, Spirit of Christmas Present in Barbie in A Christmas Carol, Madame Ruckus in Barbie: The Pearl Princess, and villains Laverna in Barbie: Fairytopia series, Lydia in Barbie & the Diamond Castle, and Eris in Barbie in A Mermaid Tale series.
When King Randolph's evil cousin, Duchess Rowena, arrives at their home and tries to take over the kingdom by attempting to poison King Randolph, Delia and her sisters work together to stop the Duchess.
Delia enjoys playing sports, mostly with her twin sister Edeline, and their first appearance in the film is when they are playing croquet. With her twin sister Edeline, she likes croquet and is ready to play anywhere (even in her father's throne room). She is shown as an adventurous, hot-headed girl. She is also protective of Genevieve like she comforted her when Rowena told her she was going to lock the girls in for the night and said no one was going dancing.
Delia has long light blonde hair and light green eyes. Her favorite color is chartreuse; her princess and ballet dresses are both in this color. Her hair is usually tied in a bun; for night she unties it. Delia's hair color looks more yellow, if you compare her hair color with the other blonde princesses.
Her casual gown is a green gown. In the middle of the beginning of the top part is a sunflower and some decorations. Her night gown is simple. It is long and white.
Her ballet dress is same as her usual gown but it is a little shorter. The gown that Duchess Rowena gives to all the princesses is gray and simple. It has the same design as her casual dress but without decorations.
- Delia's favorite gem is the peridot.
- Delia's favorite flower is the sunflower.
- A Delia lookalike is reused in the movie Barbie as the Island Princess and is seen riding the chariot that carries Queen Marissa, Tika, Tallulah, Sagi, and Azul during the last scene.
- Delia's gown can be seen in Barbie and the Diamond Castle while Princess Liana and Princess Alexa are in the mansion.