Twitter is fast becoming a platform for celebrity announcements. This is particularly true when it comes to baby news. Several high-profile stars have publicized their pregnancies via the social media site.

Aishwarya Rai
News that Aishwarya Rai and husband Abhishek Bachman were expecting their first child was announced via Twitter by the Bollywood sensation’s father-in-law Amitabh Bachchan.“T 410-News news news!! I am going to become a grandfather..Aishwarya expecting..so happy and thrilled!!!" he tweeted.The 39-year-old gave birth to daughter Aaradhya in November 2011. Reuters
Alyson Hannigan
“How I Met Your Mother” star Alyson Hannigan announced that she was expecting her first child in December 2011. The actress tweeted, “Yes, I am pregnant! This time it is NOT a food baby. We are beyond happy!” The actress, 38, and husband Alexis Denisof welcomed daughter Keeva Jane in May 2012. Reuters
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