Britney Spears' Instagram account has disappeared in the days following her engagement to Sam Asghari, but the star promises she won't be gone for long. "Don’t worry folks … just taking a little break from social media to celebrate my engagement !!!!" the 39-year-old singer tweeted on Tuesday. "I’ll be back soon." Spears' lawyer Mathew Rosengart also told Fox News in a statement that "it was her decision" to step away from the social media platform.