I am having a nightmare with 6mo DD. I thought her older sisters were chunky at this stage but she's built like a silverback gorilla and everything is tight on her
She's the same height as her twin brother, who is 25th centile for weight. She is top centile - 99.6th, to give you some comparison.
Height-wise, they are just coming into 6-9m clothes, but they're too tight around the abdomen for poor DD so I'm having to put her in 12-18m clothes to give her enough breathing room. But... She started crawling a couple of weeks ago and is getting incredibly frustrated with the trouser situation (and I am forever rolling up her sleeves). Vests the right depth are about 3" too long for her...
The best fit so far is Jojo, though it's pricey. I can't get her into most supermarket brands I've tried (Tesco, Sainsbury's, ASDA, Morrisons). Are there any wide but not long sizings anywhere that are worth trying?