SHE’LL BE THERE FOR YOU

“This Is Us” actress Mackenzie Hancsicsak was born four years after NBC’s “Friends” aired its final episode, but she may be the show’s biggest fan. Along with her mom, the 10-year-old starlet (below) excitedly attended a performance of “Friends! The Musical” wearing a “Friends” Tshirt. “The cast all loved meeting her,” according to a theater source. “She left beaming with a new T-shirt, sweatshirt and a sovenir cup!” l