Braids: Braids are all the rage this year and will look fun but mature at the same time. You can do a French Braid, a half braid, a loose slung to the side braid or a messy braid. Anything goes with a braid.
Bangs: Bangs are a wonderful hairstyle idea for long, straight hair because it breaks up the heaviness of locks that are one length with an interesting frame for your face. You can opt for whimsical side-swept look or go all out with a bold horizontal bang.
Accessories: If you want to animate your look without cutting, adding accessories is an idea neatly groomed for long and straight hair. Bolts look as well as tapes and large flowers. Keep the light and fun, and not you go wrong.
There are many great styles ideas for hair, the straight and long. and everything you need to carry out some experiments, to find out what works for you. A step out of your comfort zone and you will be happy you did!