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

Director Ram Gopal Varma is debuting again -- not on the big screen but with the mighty pen. The director tweets, 'My book 'Naa Ishtam' being released by Emesco publications at 6.30 tmrw evng taj banjara lawns..am more thrilled with it than with my first film!'

Will it be better than his debut Shiva? Let's wait and see.

In other news, RGV is planning to make another film. 'Company was about underworld politics nd sarkar was about family politics but I never ever made a film on political politics. But now seeing the incredible drama unfolding I have developed this tremendous desire to do a film called 'Rajakeeyam'. 'Raajakeeyam' will deal with behind the scenes of behind the scenes of political mechanisms nd political psychologies. Hearing bout wht's going on behind the going ons It dawned upon me tht more than politics in underworld there is more underworld in politics,' he tweets.

Do you want more from RGV's stable? Tell us!

Amitabh Bachchan will share the small screen space with his daughter Shweta Bachchan Nanda on Koffee with Karan. And the proud father has tweeted some pictures.

'Shweta and Karan have been the best of friends from when they were 5 or 6 years old !!' Amitabh tweeted, along with this picture.

Are you looking forward to this episode of Koffee With Karan?

Mallika Sherawat is keeping it short and simple. She tweets about her latest appearance. 'who gets the Oxygen cable network? I do a cameo in @UncleRush 's new TV show tonight called @RunningRussell -Like you've never seen me;)10pm.'

Well, another chica we love is Lisa Ray and her cool tweets. She says, 'Wish I'd seen Anish Kapoor's Indian debut at NGMA in Delhi...daring and provocative son exhibits at home for the first time in his career.'  

Jiah Khan tweets of her super weekend in London. 'Awesome sunday at harrods! Pre christmas shopping and ended my eve with the ATP london barclays tournament final! Rafa v fed! Sexy!'

Bipasha Basu shares the lowdown on her set action in Australia. She tweets, 'Shooting in a swamp! Full of all sorts of creepy crawlies!Action sequence today! Well this mucky scene is a part of singularity! Josh n me surely in muck, abhay will be the lucky one on horseback!Lucky bum!'

Sonakshi Sinha tweets with almost a sigh. 'no pain no gain has a whole new meaning. my new trainer kills me every second im with him. bhagwaaaaan, bacha lena.'

The boys aren't far behind. Director Ken Ghosh gives us a funny one: 'So is Shiela Sindhi? she keeps insisting her name is Shiela Kijawani'

Arjun Rampal gets back to the studios. He tweets, 'Back to reality, it's been a refreshing break from work, now gearing up for David Dhawans Rascals, with Sanju and Ajay D. Looking fwd to it. Mehr brings in her birthday tonight, a nice quite dinner with our fav people on the cards.'  

PC's co-star in Don 2 -- model and actor Sahil Shroff -- tweets, 'Hello everyone, sorry been away and trying to take in berlin for the last few days. Will miss it so much and the people. One of the best times of my life and I thank u everyone. Leaving tuesday. :)'

Maddy gets his praise for co-actor Kamal Haasan just right when he tweets, 'Was with GOD for 2 whole days-What an unparalleled event in my life-With HIM n Trisha in Singapore-4 R film "Man Madan Anbu" Music release.'

Wonder what Rajni fans have to say about that one?

That could very much be anthem of these Bollywood's girls as they celebrate their mamas!

First up Preity Zinta celebrates her mom's birthday and tweets, 'Today is Mother India's birthday so we are all chilling at home ! Happy Birthday Mom :-) Ting !'

Fellow actor Dia Mirza gets poetic to tweet with a rhyme, 'Happy Birthday Mamma!!! Tinkling voice, sparkling eyes n a thirst for knowledge. My dear evolved, scrabble addict Mother. You are the best. I am blessed.'