According to Wikipedia - their debut single "What makes You Beautiful" was released on 11th September, and reached number one on the 18th of September.
Number 1! >.<
One Direction's debut single, What Makes You Beautiful got to #1 in the UK charts and #4 in Australia
She is the youngest solo artists to debut at #1 on the UK single charts and the 2nd-youngest soloist to get a single at #1 on the UK Singles Charts. She achieved both of these records with her debut single : "Because We Want To".
The first JLS single to release, which debuted in the charts in the week ending July 25, 2009, was "Beat Again" - which peaked at number one in the charts for two weeks.
What makes you beautiful.
number 4
Adele's debut single was Chasing Pavements from the album 19, which reached #2 in the charts.
2.
Number 2
The song "Stone Cold Sober" is a debut single by Paloma Faith. The song was relatively successful throughout the charts. It reached its peek position at number seventeen in the UK charts.
The Fame, whic has been a No.1 success across the world in many album charts.
In 2006, Taylor swift released her debut single 'Tim McGraw" Which peaked number six on the billboard country charts! Thanks for asking