In a large dutch oven, heat olive oil over medium high heat. Add onion, carrot and celery, and cook for 2-3 minutes or until the onion is soft and translucent.
Remove from heat, discard the bay leaves and using a stick/immersion blender, blend about 2 cups of the soup for a creamy texture. You can also use a jug blender to do this.
Stir in fresh lime juice, and chopped cilantro if desired (highly recommended). Check the soup for seasoning, and add more salt or lime juice if desired. Serve in bowls with your favorite toppings.