Facebook tests Snapchat-style instant selfie feature with Rio 2016 filters

Facebook is testing out a new feature that lets users open up a 'selfie' camera within the app to overlay filters on to their pictures.
The Snapchat-esque tool is currently positioned at the top of select Facebooker's news feeds and invites them to share a snap or video of themselves with friends using a special set of Olympic-themed filters.
It is visually similar to Snapchat's Lenses feature, which lets users decorate their pictures with a range of animated filters, some of