‘Slumber Party’ (feat Tinashe) hitmaker Britney Spears will be performing abroad this summer. And she’s excited. See: Excited to be performing abroad this summer! ✨ More details available at https://t.co/SBF4WyfurB pic.twitter.com/YQXrotQgsz — Britney Spears (@britneyspears) March 28, 2017 If you’re interested in specifics then her official website is saying she’s …