Quoting kate♥[j&a]:" My daughter pretends to BF her baby dolls sometimes & even her baby sister from the time to time ... [snip!] ... she just had her shirt pulled up a little & was holding the baby doll to herself (no boob or anything actually showing!)."
My DD does this, she also 'wears' her baby, it makes me nothing but proud that she is doing these things. Children learn from example and who knows of enough mamas make it acceptable to play BFing then their children may be more likely to BF without fear/discomfort in the future, It can only be a good thing IMO