She's got Mommy's eyes (and nose, and lips...) and a full head of hair. Just four weeks after her Jan. 7 birth, Beyoncé
and Jay-Z's firstborn daughter, Blue Ivy Carter, is more than living up to expectations in the looks department. "There is nothing else to say: She is gorgeous," pal Kelly Rowland, Beyoncé's former Destiny's Child bandmate, tells PEOPLE. Now, her superstar parents are showing her off, posting photos of Blue Ivy on their website and encouraging fans to "share in our joy." While Beyoncé, 30, and Jay-Z, 42, stepped out Feb. 6 to attend his concert, where he performed "Glory," a song dedicated to Blue, it's otherwise been hard to tear them away from their new little girl. "Jay-Z told me it's the most incredible feeling he's ever felt," says friend J. Cole. "Parenthood is a good look for them."