From sharing a womb to celebrating their joint birthday to trying to play with the same toy, being a twin means that you’re constantly forced to reassert your dominance. That’s why so many twins experience incredibly strong sibling rivalry with their brother or sister.
This is the reason it’s important for parents of twins to give them a sense of independence away from their twin. Twins also need to develop a sense of love and affection for each other even when that rivalry is rearing its head.
Thankfully, the twins here are far too young to understand any of that yet, but they do enjoy each other’s company! As soon as one twin looks at the other, they burst out into laughter.
Mom and Dad are lucky to have such sweet babies! Watch their cuteness overload and prepare to start giggling yourself!
From: http://faithtap.com/9159/hilarious-little-girl-makes-her-twin-sister-crack-up/