Snapchat adds Challenges feature with user-created lenses
Early challenges include a "Jingle Bells" singalong and a disappearing act.
Snapchat's new Lens Studio tools make AR creation easier
It's launching new Lenses and new Lens Studio tools.
Snapchat has cute AR foam fingers for you to wave at NBA games
If you want yours to look pumped, you better hope your team is winning.