personally, I think that too much emphasis is being put on her comparisons to her past 2 pregnancies and this pregnancy. I don't think that anybdoy has taken into mind that her body is way different than with the past 2 pregnancies. She is probably much larger at this time than she was in the past at this stage. she looks as if she is carrying the babies very high this time, as well as probably being wider on the sides this time with the twins. With this in mind, she will probably be dressing much differently than in the past to accomdate these different changes. She is also probably more tired at this stage than she was in the past thus dressing nice probably takes a little more effort. Dressing to impress, with bling, feathers, ect. ect. is probably not high on her list of priorities right now. Dressing nice, and dressing for comfort most likely is.
All I can say is, whatever her maternity style is this time around works for her and that's all that matters. Right now she is performing her job perfectly. She has time to become glamourous later in life when her children are older and she becomes Queen. just my opinion.