Is it ever really ok to suggest you have a favourite, in this case niece or nephew?
In our small close family there are 4 kids (all 2.5 and under) and one auntie in particular always posts statuses and photos online with captions like 'My favourite girl" and "the best little boy ever". Only ever directed at one of the girls and one of the boys. She generally just makes more effort to see those two and makes a lot of fuss over them. The other two she sees occasionally and is nice with them, but there is an obvious difference. The whole family lives in one small village so not a case of just living closer etc.
My son is one who gets little fuss or mention. I know they are only little, and don't see these things and obviously can't see social media but it gets me down. It bothers me that one day when he understands he might feel sad his cousins are favoured over him.
She is an Auntie through brother/sisters children to all 4, so not a distant auntie to anyone. She is a little closer to the parents of the two she appears to favour but surely all kids should be treated the same regardless of adult relationships?
I would really like some advice on how to tackle this without confrontation or just make myself feel better and rise above it, rather than feeling down every time I see it happen 
thanks everyone who read!