Snow- loose with hair band
Cindy- low pony tail (with blue bow)
Aurora- Loose with head band

Ariel- loose with flower
Belle- ballroom hair style
Jasmine- High pony tail
Pocahontas- Loose
Mulan- loose short hair

Tiana- low ponytail
Rapunzel- short brown hair
Merida- dry loose hair

Mulan's loose bun is also nice

Snow-red headband
Cindy-loose with bandana
Aurora-loose with shawl
Ariel-loose
Belle-half updo
Jasmine-purple ponytails
Poca-Loose
Mulan-Loose with flower comb
Tiana-Short hairstyle
Punz-Loose pixie
Merida- Loose
Anna-Updo
Elsa-Braid

Snow - Red Headband
Cinderella - Messy Updo
Aurora - with Tiara
Ariel - loose
Belle - Half Updo
Jasmine - loose
Pocahontas - Messy Updo
Mulan - Long and loose
Tiana - Short hairstyle
Rapunzel - Braid
Merida - Loose
Anna - Coronation Updo
Elsa - Braid

Snow White: red headband
Cinderella: with white bandana
Aurora: loose with tiara
Ariel: loose
Belle: half up, half down
Jasmine: ponytail (when she's wearing the red outfit)
Pocahontas: loose
Mulan: loose, before she cuts it
Tiana: deception dream hairstyle (when she's in the white outfit)
Rapunzel: long and blonde
Merida: loose
Anna: updo
Elsa: braid

Snow White: Red hairband
Cinderella: Braided pigtails
Aurora: With a headband
Ariel: Loose
Belle: Down
Jasmine: Ponytail
Pocahontas: Loose
Mulan: Loose and when she's in the rain or when she has the flower pin
Tiana: With the tiara and blue gown
Rapunzel: Long and blonde
Merida: Loose
Anna: Braided Bun
Elsa: Side Braid

Snow White... Blue headband?
Cinderella: Down with white maid's head cloth.
Aurora: Loose with black headband (in peasant dress).
Ariel: Mostly loose with blue ribbon (like during Kiss the Girl).
Belle: Loose, like after the Beast saves her from wolves.
Jasmine: ... Loose, after she brushes it.
Pocahontas: Flowing in the wind.
Mulan: Long and loose with flower comb.
Tiana: Classy 1920's Bob.
Rapunzel: Elaborate flower braid.
Merida: Loose and partially hanging over her shoulders and face, to show how wild and untame she is. <3
Anna: Braided pigtails.
Elsa: Single braid.

Snow White: Red headband
Cinderella: Low pony tail
Aurora: Loose with black headband
Ariel: Half loose with blue bow tie
Belle: Ball updo
Jasmine: Purple ponytails
Pocahontas: Loose
Mulan: Loose knot updo/loose bun
Tiana: With the tiara and blue gown
Rapunzel: Loose
Merida: Loose and wet
Anna: Braided pigtails
Elsa: Coronation updo

Snow White: Blue headband
Cinderella: With bow
Aurora: Black headband
Ariel: Blue bow
Belle: Loose
Jasmine: Slave hairdo
Pocahontas: Loose
Mulan: Short and loose
Tiana: Messy bun (with orange outfit)
Rapunzel: Short
Merida: Loose
Anna: Braided pigtails
Elsa: Coronation updo

Snow White: Red headband
Cinderella: braided pigtails
Aurora: black headband
Ariel: Loose
belle: low ponytail
Jasmine: Loose
pocahonta: Loose?
mulan Long and loose
Tiana: Hairstyle from her dream sequence
Rapunzel:long braid
Merida: loose and wet
Anna: pigtails
Elsa: loose braid

Sequels included? If not my second choice is in parenthesis. (:

Snow: Red Headband
Cinderella: Messy Bun from Cinderella 3 (or Braided Pigtails)
Aurora: Black Headband
Ariel: Ponytail with Yellow Bow from TLM2 (or Loose)
Belle: Ponytail with Dark Red Bow from BatB Christmas (or Ponytail with Blue Bow)
Jasmine: Classic with Purple Accesories
Pocahontas: Updo from Pocahontas 2 (or Loose)
Mulan: Knotted Bun
Tiana: Messy Bun - when we first see her as an adult
Rapunzel: Long, Blonde, and Loose
Merida: Loose
Anna: Braided Pigtails as a child. :3
Elsa: Coronation Bun

Snow: Red Headband
Cinderella: Loose Hair
Aurora: Black Headband
Ariel: Loose
Belle: Half Updo
Jasmine: High ponytail
Pocahontas: Loose
Mulan: Loose
Tiana: Messy bun
Rapunzel: Long and loose
Merida: Loose
Anna: Braided bun
Elsa: Braid

Snow-Red Headband
Cinderella-Ballroom Updo
Aurora-Loose
Ariel-Loose
Belle-Half Updo
Jasmine-Loose
Pocahontas-Loose
Mulan- Long and Loose
Tiana- hairstyle from Almost There song
Rapunzel- Long and loose
Merida- Loose
Anna- Braided bun
Elsa-Braid

Snow White - Red headband with bow
Cinderella: Ponytail with blue bow
Aurora: Loose with black headband
Ariel - Loose with wedding veil and sparkly crown
Belle - Ponytail with pink bow
Jasmine - Ponytail with jeweled purple headband (not the V-shaped one, but the round headband she wears at the ending)
Pocahontas - Messy updo (from the sequel)
Mulan - Matchmaker bun
Tiana - Unadorned bun with curls (that goes with orange outfit near the ending)
Rapunzel - Golden and long and braided with flowers.
Merida - Wimple with red lock of hair sticking out.
Anna - Coronation updo.
Elsa - Coronation updo.

Snow White: Blue Headband
Cinderella:
Aurora: Loose With Crown
Ariel: Loose
Belle: Ball Updo
Jasmine: Low Ponytail With A Blue Tiara And A Flower
Pocahontas: Messy Updo
Mulan: Matchmaker Bun
Tiana: Second Wedding Updo With Veil
Rapunzel: Braided With Flowers
Merida: Wimple With Red Lock Of Hair Sticking Out
Anna: Coronation Updo
Elsa: Braid

Snow White: Red Bow.
Cinderella: Low Ponytail.
Aurora: Tiara.
Ariel: Loose with Hairclip.
Belle: Half Updo.
Jasmine: High Ponytail.
Pocahontas: Braid.
Mulan: Loose with Flower.
Tiana: Half Updo (the one she has with the orange outfit)
Rapunzel: Long and Loose.
Merida: Wet.
Anna: Coronarion Updo.
Elsa: Coronarion Updo.