On Tuesday, Kelly Rowland and her husband Tim Witherspoon welcomed a son named Titan Jewell. Her BFF Beyoncé has written a heartfelt note congratulating the new mom and welcoming her nephew into the world.

Bey took to Instagram to share a photo of a baby holding hands with his parents along with some beautiful words.

There’s no better feeling than holding my beautiful nephew. I thank god for the honor of witnessing my sisters journey into motherhood. I’ve always dreamt of our little ones growing up together. I’m so thankful for our bond. Baby Ty, I love you so much. Congrats to my Spoons.

Solange, who has a son of her own, was also overjoyed for her sis Kelly, whose baby boy weighed 7.5 lbs. “I witnessed a miracle yesterday. My beautiful sis is a mommy!” she said.

She posted a throwback photo of her with Beyoncé and Kelly.

#Emoasever Hard to believe as the baby, I was the momma of the family in this photo. I’ve now watched both of my incredible sisters give the gift of life in such magnificent, powerful, graceful, strides. I couldn’t be more moved today as I think about the power of sisterhood, kinship, and womanhood. The greatest crown to wear. The strongest bond, unbreakable. Strength, endless. Love, at the root of it all.

Kelly’s husband Tim Witherspoon posted a photo on his Instagram account describing the meaning of the name Titan.

This is the first child for the couple, who wed in May. “I’m excited to bring a child into the world, and sharing that experience with my husband is probably the most beautiful part,” Kelly told ELLE.