they don't look any bigger, the top is just magically coming off. removing breast_expansion tag.

It's like her breasts are shrugging off the bikini of their own accord. Clearly they just want to be free.

be free, boobies! be freeeeeee~

I love America!

"Freedom" is a wonderful thing.

Where is this from?

Is the phanthom of the beach!! XD

Her initial reaction should be: WTF. D:<

It's a GIF from a game by Psikyo, Taisen Hot Gimmick. You press a button repeatedly to get the action in each scene to happen. In this one, it just happens to be her bikini top sliding off :P

The budget only allowed for the animation of tits and facial features. Most of the people on the development team were not happy with this. They thought too much money was going to the facial features.