Tinkerbell from Peter Pan. Just look at her sexy green dress.
Miss Kitty Mouse from The Great Mouse Detective. Her only appearance in the film is her putting on a burlesque performance while stripping from a dress to a showgirl outfit, earning quite a bit of cheers from the bar patrons.
Ariel from The Little Mermaid. Seashell bra, long red hair, nothing else on, when she first transforms into a human and a mesmerizing voice.
Not the main character, but In Beauty and the Beast we have the Bimbettes trio, the Gaston's fangirls. Beautiful, fashionably dressed and adoring triplets. And are quite... bouncy.
Also Babette, French Maid of castle. Averted as she's a feather duster, but her human form looks somewhat like Belle crossed with the Bimbettes.
Princess Jasmine from Aladdin. Definitely an attractive Disney Princess, especially in her red slave suit. Plus, she is the first (human) princess that wear a Bare Your Midriff outfit.
Kida from Disney's Atlantis The Lost Empire, who is a beautiful Atlantean princess with tanned skin, white hair, and blue eyes who wears a skimpy outfit comprised of nothing but a light blue bra, a single gold earring on her right ear, a gold armband on her left arm, a dark blue sarong with a single pink stripe with gold outlines and a light blue waistband and sash, and two gold anklets on her right leg. Who happens to be voiced by Cree Summer.
Megara from Hercules. Courtesy of Ken Duncan's expressive animation.
Princess Teegra from Fire and Ice definitely belongs with her costume being a small thong bikini.
It's a natural since she was designed by Frank Frazetta... Frazetta specializes in fanservice.
Rita Malone from Aardman's Flushed Away ought to count as a PG-rated version of this trope. During the movie she drops her pants at one point (revealing blue-striped granny-panties) and seems to enjoy shaking her butt as a taunt to pursuers. But then again, she is voiced by Kate Winslet...
Most of the female characters in Heavy Metal are buxom ideals and are completely naked, especially the ones in the "Den" story.
The Dazzlings, the main antagonist from My Little Pony Equestria Girls: Rainbow Rocks. Downplayed due to the all-ages nature of the franchise, but still present. The three have slow, slinky movements, including a lot of swinging of their hips; they have melodious voices, and alluring gazes. When telling the group about them, Twilight specifically mentions the legends said the three were beautiful. Being sirens, it all comes with the territory as part of their allure.
Holli Would from Cool World is a Darker and Edgier version of Jessica (as the entire movie to Who Framed Roger Rabbit). She is a blonde, voluptuous and evil vixen (perfomed by Kim Basinger); the entire movie is in fact about the subject of Jack Deebs, the main charcater, have a Perverse Sexual Lust for Holli. Also the waitress Lonette would qualify.