Lavender hair is a trend that has been on the rise, both on stardoll & real life.

Some dolls i've seen around stardoll flaunting lovely lavender hair:

(Dolls, from left to right, Numb.-. juankarloski12, yukimi, Mileyismylovee) 

 If you want to try lavender hair yourself there are two particular shades i am rather fond of in the starplaza. Both are from the Doree Collection, my favourite of the two is the 'Rosy Brown hair colour', but there is also a lovely shade named 'Lavender' which is very nice. There are also many past shades that aren't available any more, if you are lucky enough to own them. 

(My doll wearing the 'Rosy Brown Hair Colour')