Justin Bieber's 2 billion YouTube views
Justin Bieber has become the first person to achieve more than 2 billion views on YouTube.
The 'Baby' singer reached the landmark over the weekend shortly after the launch of the video for his new Christmas single 'Mistletoe'.
The 17-year-old has dominated YouTube since his career launched via the video-sharing website in 2009.
The video for his single 'Baby' is Justin's most popular, with over 650 million views.
Lady Gaga is the second most-popular artist on YouTube, with 1.88 billion views for her videos, while Rihanna is third with 1.7 billion views.
The top-5 music stars are completed by Eminem at number four with 1.51 billion views and Shakira at number five with 1.21 billion views.