This is an interesting set that combines elements from different lines: a couple years ago Hairdorables from Just Play was transferred to Just Play subsidiary Xtreme Play and rebranded as just Hairmazing (this had been the term used for the Hairdorables teen fashion dolls). This particular giftset pictured was available at Walmart and branded as Hairmazing, with brand-appropriate colors, but using molds from the Just Play’s Winner’s Stable line, which was a line of more realistically-colored horses. Other Hairmazing dolls and ponies (unicorns) continue to be released, but I haven’t seen the Winner’s Stable molds reused on any other products in the line.
Pictures from my collection. Click images to enlarge.
Apricot: 
Raspberry: 
Lilac: 
Orchid: 
Lacey: 