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 customers ( first_name VARCHAR, last_name VARCHAR, id VARCHAR )
TABLE: CREATE TABLE invoices ( customer_id VARCHAR, invoice_date VARCHAR )

### Question ###
Find out 5 customers who most recently purchased something. List customers' first and last name.

### Accurate SQL ###

SELECT T1.first_name, T1.last_name FROM customers AS T1 JOIN invoices AS T2 ON T2.customer_id = T1.id ORDER BY T2.invoice_date DESC LIMIT 5