at mount stuart primary school in cardiff bay, marieme and ndeye are celebrating a special milestone. teacher: happy birthday! hi! birthday girls, hello! how are you? good morning! hiya! have you got new hair? who's seven today? me! no way! seven! what time were they up this morning? 0h, four o'clock in the morning! four o'clock. 0h, were they? can you imagine? 0h! oh, my gosh, ibrahima! "are we seven?" i said, "yeah. you go out from my room!" yeah. ah, big day, isn't it? a very big number. hey, i hear it's— somebody's birthday today. whose birthday is it? children: ndeye and marieme. well, do you know what? we've got a big i surprise for them. shall we find out what it is? shall we? happy birthday! children shriek hi, everyone! 0h! i'm so excited, too! how are you, girls? good. happy birthday! today is a big milestone for marieme and ndeye. they're hitting seven. it's huge! it's huge for all of us. and it's a celebration of where we are with them, really. we have organised today some special things. close your eyes. one of our members of staff has made the most beautiful cake. see