On Monday, the world was introduced to Caitlyn Jenner.

Formerly known as Bruce, Caitlyn made her debut with a stunning Vanity Fair cover — and gave a whole new meaning to the term "break the Internet." (It also booted the revelation that Jenner's stepdaughter Kim Kardashian is expecting her second child with husband Kanye West right out of the news cycle.)

Several celebrities, including members of Jenner's family, offered responses to the magazine cover, which will hit newsstands on June 9, on social media. Here's a roundup of some of the reactions:

Look back on Caitlyn Jenner's inspiring journey: