Jessica Alba surprised her parents by buying them her father’s childhood home. The ‘Sin City’ actress told fans she has been working on the “project of [her] dreams” and had pretended to her mom and dad, Mark and Catherine, that she’d help them work on the property so they could sell it to fund her grandmother’s medical costs, only to later reveal she was keeping it in the family. Sharing a video of her announcement to Instagram, Jessica captioned the video: “Almost three years ago, I started the project of my dreams… I surprised my parents by buying them a house!! Now, it wasn’t just any hous…