Justin Bieber pronounced on Twitter last night that he was having a "good day", even as he was keeping fans waiting for his concert at the O2 Arena.
The pop star posted the message at 8:32pm, when his show was due to begin, but didn't start the performance until nearly 10:30pm.
He also tweeted that he was in a "good mood", and "ready for Day 1 at the O2", later saying that he could "hear" his fans in the audience.
In a good mood. Got my friends and team with me here and ready for Day 1 at the O2. London get ready! #BELIEVEtour