For anon, about Kristen's hair, There's many ways you can get the look. When your hair's damp, do a dutch or french braid from the top of your head all the way back. and sleep with it in. You can also go to sleep with a bun instead of a braid. Drying your hair with one of those round claw diffusers work too. (Putting a section of hair on the diffuser and holding it against your head) Salt spray too, I believe Kristen uses Bumble and Bumble's surf spray. I have more tips but little space to type.
here you go anon, thanks :)