Ordering admin.ModelAdmin objects in Django Admin

A workaround that you can try is tweaking your models.py as follows:

class Topping(models.Model):
    .
    .
    .
    class Meta:
        verbose_name_plural = "2. Toppings"

class Pizza(models.Model):
    .
    .
    .
    class Meta:
        verbose_name_plural = "1. Pizzas"

Not sure if it is against the django’s best practices but it works (tested with django trunk).

Good luck!

PS: sorry if this answer was posted too late but it can help others in future similar situations.