The Bey-bies have made their debut! One month after welcoming her twins, Beyoncé took to Instagram to introduce her bundles of joy, Rumi and Sir Carter, to the world. Much like her record-breaking pregnancy announcement in February, the Lemonade singer posed in front of flowers for the striking picture. "Sir Carter and Rumi 1 month today. 🙏🏽❤️👨🏽👩🏽👧🏽👶🏾👶🏾," JAY-Z's wife captioned the photo of herself wearing a floral print organza rose robe by Palomo Spain, while cradling her sleeping newborn son and daughter.

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tesbeyonce2VIEW GALLERY The singer introduced her newborn twins on Instagram Photo: Instagram@beyonce

Along with the photo, the 35-year-old also confirmed the names of her twins for the first time, after filing trademark documents with the US Patent and Trademark Office at the end of June. Proud grandmother Tina Knowles Lawson reposted the first photo of her new grandbabies writing, “So Happy my baby shared a photo of her babies with the world ❤️❤️❤️proud grandma hello Sir Carter and Rumi Carter❤️🙏🏾❤️ Boy and girl what a blessing ❤️."

testbeyonceVIEW GALLERY The singer introduced her newborn twins on Instagram Photo: Instagram@beyonce

Rumi and Sir Carter are the newest members of the Carter family, joining five-year-old big sister Blue Ivy. In a 2013 interview with Good Morning America, the Grammy winner opened up about her experience with. "I am very protective," she admitted. "I just want to make sure that [Blue] can have a healthy, safe, normal life. In the back of my mind, she's my priority. And life is completely different now. So I'm - I feel really, really just lucky that I can still do what I love, and now have a way bigger meaning. And that's to be her mother."

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