Article continues below advertisementSofía Vergara drew eyes during her sister's birthday festivities.The Modern Family star, 53, was the center of attention in a busty red gown while celebrating Veronica Vergara on Tuesday, August 12.Article continues below advertisementSource: @sofiavergara/InstagramSofía Vergara is close with her sister Veronica.Sofía stunned in a strapless red maxi that bared her cleavage. She paired the figure-hugging frock with dangling silver earrings and wore her brunette locks in loose waves.