We haven't seen Sienna because even though it's Thursday Sophie has taken a day off work to be with her. I'm not sure if they are doing anything specific but if Matthew is involved he didn't seem to know anything about it when Mark rang him on Tuesday to ask him for something. He replied "yep, no problem, I'll drop it off when I bring Sienna on Thursday". When Mark told him Sienna wasn't coming because it's her birthday and Sophie was having a day off, his exact words were "oh, no".
They are having a family get together on Saturday so we'll be going to that although we'll be late arrivals as Amy doesn't finish work til 2pm. By the time she's got home, got changed it'll be 3pm before we arrive. But they're holding off on the cake and singing Happy Birthday until we get there.
Sophie sent me the official cake smash photos and I thought you might like to see some. My favourite is the first one. She's crying and it reminds of that song "it's my party and I'll cry if I want to". Mind you I think I would as well if I had a garden with ears on my head and cream smeared all over my feet! She's pretty darned cute though even if I do say so.