Lego has launched a branded pack of Facebook stickers. Featuring the brand's popular 'minifig' characters, the animated virtual stickers can be included in messages.

These aren't the first branded stickers available on Facebook, but they've previously been limited to films (most recently Free Birds and Disney's Frozen) and mobile games (Cut the Rope and Candy Crush), potentially signalling a new direction for the business.

Facebook isn't currently charging for any of its stickers - unlike LINE, which makes around a quarter of its revenues from its own virtual sticker offering. It's not currently clear whether there's any cost involved for the brands involved, or if Facebook just doesn't intend to monetise this feature.