Julia Roberts Can-NOT Keep It Together During This Absurd Reunion With Dermot Mulroney

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In case you missed it, national treasure Julia Roberts recently joined Instagram. Since she's still growing her following, however, Ellen DeGeneres decided to help her out a little bit by orchestrating a photo opp for the actress that had all the key elements of a viral post: a bikini, a nostalgic throwback, food, and friends.

While the bikini element was slightly, ahem, enhanced, Martha Stewart hand-delivered a pie for the food component and her friend — best friend, you could say — was Dermot Mulroney! As her My Best Friend's Wedding costar approached the set, Julia started uncontrollably laughing and making futile attempts to cover up her "bikini." She joked, "Oh, how the mighty have fallen." Watch the hysterical reunion above.