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After posting a picture that showed her daughter from behind, Christina Aguilera finally gives a clear look at the baby. She graces the cover of PEOPLE magazine's latest issue, lovingly kissing her adorable blue-eyed little girl on the cheek.

So excited to share our baby Summer with the world. Thank you @PeopleMag! More great photos at https://t.co/sCG9HN5oZD pic.twitter.com/JmaIbHc4g0

— Christina Aguilera (@xtina) February 11, 2015

"I was speechless," the proud mother says. "She was literally like an angel ... We had an immediate calm bond, and I felt unexplainably connected to her and her spirit." She continues gushing, "Her smile lights up a room and I know it melts mama and daddy's hearts. She laughs a ton and is easy to make smile. She just wants to be where the action is!"

After taking a break to focus on her family, Christina will be back to work reprising her role as a judge on "The Voice" for season 8. She is also working on a new album and producing a TV series for ABC Family.

"It's definitely not easy juggling work and motherhood, as being a parent is a full-time job within itself," she explains. "You just have to make it work for you. My life has so many different moving parts, but my kids are the center focal piece, and everything else shifts around them."

"It's hard to know you won't have all the right answers at the right times. And 'mom guilt' is the worst thing ever," she adds. "But you have to surrender and let go, knowing you're doing your very best and no one loves them, or wants what's best for them more than you."

Baby Summer, now 6 months old, is Christina Aguilera's first child with her fiance, film producer Matt Rutler. She is also mother to Max Liron, 7, from her previous marriage with Jordan Bratman. Despite her hectic schedule, "they are the center of my universe," Christina says.