models.py

from django.db import models
from django.utils.translation import ugettext_lazy as _
from django.contrib.auth.models import User, Group

class UserProfile(models.Model):

    GENDER_CHOICES = (
        ('M', 'Male'),
        ('F', 'Female'),
    )

    #Links to the user model and will have one to one relationship
    user = models.OneToOneField(User)

    #Other fields thats required for the registration
    gender = models.CharField(_('Gender'), max_length=1, choices=GENDER_CHOICES, null=False)
    dob = models.DateField(_('Date of Birth'), null=False)
    address1 = models.CharField(_('Street Address Line 1'), max_length=250, null=False)
    address2 = models.CharField(_('Street Address Line 2'), max_length=250)
    city = models.CharField(_('City'), max_length=100, null=False)
    state = models.CharField(_('State/Province'), max_length=250, null=False)
    pincode = models.CharField(_('Pincode'), max_length=15)