Twitter is a busy world, and Bollywood contributes a great deal to it. Here's looking at the best star tweets of the day.

On Tuesday morning, Konkona Sen Sharma and Ranvir Shorey welcomed their baby boy into the world.

Delighted with the news, actress Sandhya Mridul tweeted, 'Always great when friends have babies :) DELIGHTED!!'

Rahul Bose joined in to congratulate the couple, 'massive congratulations to @konkonas and ranvir! a boy it is. with those genes, the dynasty is secure,' he tweeted.

Vivek Oberoi and Mahesh Bhupathi congratulated the couple as well.

Celina Jaitly shot for a campaign by PETA and was caged for over five hours.

'For the peta campaign I caged myself for over 5 hours its the most disturbing feeling imagine being caged for ur entire life in a 3ft cage' Celina tweeted about the experience.

Meanwhile, Sonakshi Sinha flaunted her latest buy on twitter. 'Check out my new BH watch. In my fav colour! Yelloooooooooooooow!'

The Bachchan family got together for dinner after a long time due to their busy schedules.

Amitabh Bachchan tweeted: 'Its Mumbai again after 2 months ! All back home after long .. Abhishek, Aishwarya, Jaya .. good to be at the dining table with all .!'

Abhishek sounded joyful too. 'Whole family back together after over 2 months. Always a good feeling to walk into a full house. So it was late dinner and a late night!' he updated.

The newly-wed Gul Panag humoured actor Kamaal R Khan when he decided to unfollow her on twitter. 'I am heartbroken RT @kamaalrkhan: @gulpanag Now you are married so I don't want to follow you,' she wrote.

Minissha Lamba, on the other hand, seemed upset and tried to cheer herself up. 'Received some bad news on the work front.. Everyday is such a battle.. Chin up gurl!!' she wrote.

As twitter completed its fifth anniversary, Bollywood stars tweeted their birthday wishes.

Minissha Lamba tweeted: 'happy birthday twitter you turn 5 today. Thank you for bringing me more closer to my fans!!'

Abhishek Bachchan tweeted 'Oh ya! HAPPY BIRTHDAY TWITTER!!! You turn 5 today. Thank you for connecting us all #happybirthdaytwitter' he posted.

While the condition in Japan seems to be going worse day by day, Bollywood expressed their concern.

Jiah Khan tweeted, 'My heart goes out to #Japan :-( 3 disasters in 5 days! One of the richest countries in the world has been brought down to their knees :-('

Amitabh Bachchan expressed concern about the radiation. 'Distressing news about nuclear problems in Japan .. warning sms swarming the mobiles about rain and precaution .. how much is true ?!' he asked.

Manoj Bajpai tweeted, 'Japan's horrific incident refuses to leave the Japanese people.let's keep praying for them.'

Ayesha Takia had a similar appeal, as she tweeted, 'Let us all keep praying for Japan,we must not stop.'

Dia Mirza praised Japan, 'Japan you make me marvel... Your discipline and determination to tide over such trying times is truly inspirational. Prayers and good wishes'