Christina Aguilara concert in Hong Kong

Last week I went to see Christina Aguilara's concert. It was an excellent show! Her singing and dancing was flawless.... dancers, lighting, sound and stage props were great.  It seemed like i was at the MTV awards show in the US, minus a really crazy crowd.  It's odd, when you see a concert in HK, you have to be in good behavior or else the arena security will tell you so.  I saw some of that happening.  Like standing up at the front of the fences....security would tell you to sit down.  Bummer!  Anyway, C.A can really sing her heart out! Amazing! By the way, I wonder if she was already pregnant in HK?  Anyone going to Gwen Stefani concert?