Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE invoices (total INTEGER, customer_id VARCHAR)
TABLE: CREATE TABLE customers (first_name VARCHAR, last_name VARCHAR, id VARCHAR)

### Question ###
List the top 10 customers by total gross sales. List customers' first and last name and total gross sales.

### Accurate SQL ###

SELECT T1.first_name, T1.last_name, SUM(T2.total) FROM customers AS T1 JOIN invoices AS T2 ON T2.customer_id = T1.id GROUP BY T1.id ORDER BY SUM(T2.total) DESC LIMIT 10