Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How many series premieres did the season "All-stars" have?

### Inputs:
table_name: table, columns: ['Season', 'Episodes', 'Series premiere', 'Series finale', 'Winning couple', 'Winning profit ( AUD )', 'Host(s)', 'Judges']

### Response:
SELECT COUNT Series premiere FROM table WHERE Season = All-Stars