Now is the time to switch your high school-ish email address.
No more "swiftygirl72" or "callmeswift" or whatever was cute in 1999.
It takes about 2 seconds to open an email account. I know I have previously posted about getting your own personal email to begin with (not borrowing your girlfriend's email to send out your resume on your behalf). Now it's time to make sure it named something slightly north of professional.
Some personality is fine. Silliness is not.