Beyonce has gushed over her ''beautiful nephew''.

The 'Crazy In Love' hitmaker deemed it an ''honour'' to meet her former Destiny's Child bandmate, Kelly Rowland's newborn son, Titan, adding there was ''no better feeling'' than holding the baby in her arms.

She wrote on her Instagram account along with a photo of a woman's hand being grasped by a baby's fingers: ''There's no better feeling than holding my beautiful nephew. I thank god for the honor of witnessing my sisters journey into motherhood.(sic)''

Beyonce, 33, confessed it was a dream come true for Kelly - who welcomed Titan earlier this week with her husband Tim Witherspoon - to have given birth to a tot for her own two-year-old daughter, Blue Ivy, to grow up with.

She said: ''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.''

Kelly, 33, first announced she was expecting a child in June this year, a month after the couple tied the knot in Costa Rica and the raven-haired beauty has shown much excitement about the arrival throughout her pregnancy.

Speaking about naming her son, she previously said: ''The dad picked out the name. It had to do with family.''

Just last month she posed for a number of nude photos, in which her growing baby bump was at its biggest.

She said of the imminent arrival of baby Titan: ''When the baby gets here, it's not just one baby. I have two babies now. My husband and the baby - you have to take care of both.''