This message was posted by Karan Johar:
My Bebo had a baby boy!!!!!!! Am so so happy!!!!!!! #TaimurAliKhan? Karan Johar (@karanjohar) December 20, 2016
Meanwhile, Karisma Kapoor is a proud masi:
Kareena's close friend Amrita Arora welcomed her to the 'Mommy club' with an adorable picture of Kareena and Saif:
Soha shared updates about the mother and the baby:
Delighted to welcome Taimur Ali Khan Pataudi into the world. Both mother and son are healthy and doing well. Father is doing extremely well!? Soha Ali Khan (@sakpataudi) December 20, 2016
Sonam, who co-stars with Kareena in Veer Di Wedding wrote:
Tusshar and Sophie sent 'heartiest congratulations' on Twitter. Tusshar made his Bollywood debut opposite Kareena Kapoor with 2001's Mujhe Kuch Kehna Hai. Tusshar Kapoor is a single father to a son, who was born through IVF and surrogacy.
My heartiest congratulations to a favorite costar and my 1st heroine!Following up to a stellar career, now, may this day be the start to an? Tusshar (@TusshKapoor) December 20, 2016
even more glorious life with God's blessing in hand! Cheers to Saif and her both and peace and everlasting joy to the little prince!? Tusshar (@TusshKapoor) December 20, 2016
Congrats beautiful Bebo & Saif on the birth of your baby boy!!! Such amazing news! God... https://t.co/bq8xnGpzDP? Sophie Choudry (@Sophie_Choudry) December 20, 2016
This morning, Kareena and Saif announced baby Taimur's arrival with this statement: "We are very pleased to share with you all the wonderful news about the birth of our son: Taimur Ali Khan Pataudi, on the 20th of December 2016. We would like to thank the media for the understanding and support they have given us over the last 9 months, and of course especially our fans and well-wishers for their continued affection. Merry Christmas and a happy new year to you all."
Kareena Kapoor, 36, and Saif Ali Khan, 46, fell in love on the sets of 2008 film Tashan. They dated for four years before getting married in 2012.
Kareena Kapoor will next be seen in Veere Di Wedding, with Sonam and Swara Bhaskar. Kareena made headlines when she was cast in the film - actresses have earlier been dropped from movies after announcing their pregnancies, notably Aishwarya Rai Bachchan who was replaced by Kareena in Madhur Bhandarkar's Heroine. Kareena was last seen in Udta Punjab, co-starring Shahid Kapoor, Alia Bhatt and Diljit Dosanjh. Saif Ali Khan has director Vishal Bhardwaj's Rangoon releasing next year.