Step 1:
Wash and condition your hair thoroughly. If it's already clean then skip to Step 4.
Step 2:
Apply some defrizzing product.
Step 3:
Blow dry your hair.
Step 4:
Make a parting to the right side of your head.
Step 5:
Turn on your straighteners and straighten your hair, but don't OVER straighten because you can see a bit more of a wavy texture to Vanessa's ponytail.
Step 6:
Slick your bangs towards your right ear using a little styling product.
Step 7:
Slick the rest of your hair into a ponytail by the back of your neck.
Step 8:
To tie it up use a scrunchie which would blend with your hair colour.
Step 9:
Spritz on a little bit of hairspray to lock in your hair and you're ready to go.

Thanks to Leila for this guide.