Summer dresses for 'apples' with fat arms!

[Nancery]

Help! Am currently a 16, unfortunately, with goodish legs but revolting upper arms and stomach. I saw my reflection today and realised I actually look far worse than I thought
Am trying to find some nice dresses to wear to try and soften the blow (I am losing weight but it's a bloody slow process!) but the only ones I've found and loved are £££ from Cabbages & Roses. I have a linen Boden tunic that looks great but don't want to get more of the same. I love floaty things that are effortless to wear, and have a small child and a dog so it needs to be washable!
Please inspire me! Thank you! X