And the gender of the new arrivals has finally been revealed...
Beyoncé and husband Jay-Z welcomed twin babies on Monday, according to multiple reports.
A source told People magazine yesterday that 'Bey and Jay are thrilled and have started sharing the news with their family and closest friends.'
And it turns out, Beyoncé's father's prediction was correct, as the A-list couple welcomed a boy and a girl.
The news was confirmed after a well-wisher was spotted arriving at the hospital with balloons and a congratulatory card addressed to 'B and J'.
The singer revealed to the world that she was expecting not one but two new additions to the Carter-Knowles clan back in February, with an internet-breaking Instagram announcement.
This comes after a long period of speculation about the twins' impending arrival. An extensive security detail was spotted at a Los Angeles medical centre earlier in the week, and the singer's sister Solange was also pictured visiting the facility.
The couple are yet to speak out about the happy news, and the gender and the names of the newborns have not yet been revealed
Beyonce and Jay Z earlier this year
Luckily for fans, Beyoncé has kept us updated on Instagram throughout her pregnancy, showing off her chic maternity dresses, oh-so perfect hairdos, and – err – not a hint of morning sickness (she is Beyoncé after all – a simple pregnancy scan snap just wouldn't cut it!).
Our favourite of her posts include those of her extravagant baby shower and these below from back in April...
Instagram / @beyonce
The singer shared with her 100 million followers a set of pictures showing off her bump in all its glory in a red maxi dress.
In a close-up snap Bey also shined the spotlight on her matching ruby lippy and a pair of statement earrings we want in our jewellery box, stat! Instagram / @beyonce
This all followed the news in February that Beyoncé had pulled the ultimate Beyoncé, with the (double) pregnancy announcement that no one was expecting.
Posting a heavily stylised image in which she was clad in a green veil, blue knickers and a burgundy 'Lorna' bra by Agent Provocateur, holding her developing stomach, the 35-year-old wrote:
'We would like to share our love and happiness. We have been blessed two times over. We are incredibly grateful that our family will be growing by two, and we thank you for our well wishes. The Carters'
The singer had managed to keep her pregnancy entirely secret, with not even a whisper preceding her baby announcement.
Beyoncé and Jay are (as mentioned above) already parents to Blue Ivy Carter, who celebrated her 5th birthday in January. The singer revealed her first pregnancy during a performance at MTV's Video Music Awards in 2011, when she unbuttoned her jacket, dropped her microphone and rubbed her stomach to indicate the happy news. Four years later, Blue Ivy accompanied her mother to the same awards ceremony.
What can we say to the billionaire power couple except, of course, a MASSIVE CONGRATULATIONS to Bey and Jay!