If you've forgotten your password, you can request your password to be sent to the email address you have previously registered with.
Head to the sign in page and click the "forgot password link". An email can be sent to you with a link to change your password. When you receive your email, click on the link or copy and paste it into your browser. Enter your new password and click submit. You will then be taken back to The Body Shop homepage where you will then be able to sign in using your email address and new password.
Please note: The link that you will be sent expires within 30 minutes. If you don't think you have received an email with a link, check your junk/spam email folder just in case its gone in there.