Selena Gomez achieved a world record for being the first person to reach 100 million followers on Instagram.
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Instagram was launched and gained 25,000 users on its first day.
Queen Elizabeth II published her first post on Instagram.
American singer Selena Gomez released her second full-length studio album 'Revival.'
David Attenborough gained one million followers on Instagram within 4 hours and 45 minutes of his first post.
Selena Gomez's debut studio album 'Stars Dance' was released.
