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.

Bipasha Basu is getting bolder day by day. After posing topless for the January issue of Maxim, she posed topless again, this time for photographer Dabboo Ratnani's 2011 calendra.

Bipasha posted the picture on twitter, and tweeted: 'Dabboo ratnani's calendar pix 2011! 8 yrs I hve shot for it! His temperament n wrk bth, EXCELLENT!'

Sonakshi Sinha, who also posed for the calendar, wore a wet look. She tweeted, 'My shot from @dabbooratnani's calendar! I'm impressed, with him. And myself ;)'

After a lot drama and tussle, the dollars and star-dust have finally settled down at the Indian Premier League (IPL).

Preity Zinta, who owns Kings XI Punjab, explained why she didn't opt for Yuvraj Singh and Irfan Pathan: 'So we had no choice but to start with a clean slate. I guess sometimes you have to let go. All KXIP players Yuvi ; Pathan; Mahela etc will be missed. Since V have a brand new KXIP squad I'd like to Welcome Gilly & all new players to KXIP ! Live Punjabi play Punjabi :-) Ting !'

Vijay Mallya's son Siddhartha seemed surprised with the money being spent on cricketers. 'To buy every superstar, the auction cap means that we just can't afford to do that! Pls realise that this auction is not the same as it was 3yrs ago...players values have gone up! While in an ideal world we would have liked.'

While Shilpa Shetty, co-owner of Rajasthan Royals, was happy with her team: 'Good picks despite the constraints ,v did well,Happy overall!Mix of youth with experience is our motto tht will continue.Let the fun begin.'

But Abhishek Bachchan wasn't happy with Saurav Ganguly's boot from the IPL. He tweeted, 'This is CRAZY! no DADA in the ipl! Ridiculous. Maybe we should bring him over to the Mumbai Indians.'

Meanwhile, the IPL auction reminded actor Ranvir Shorey of onions: 'The IPL Auction reminds me, what are onions going at now?'

Hrithik Roshan, who turned 37 today, tweeted that he upset his sister-in-law Farah Ali Khan: 'Hello tweeple. I have upset d one person responsible 4 intrducing me 2 dis twitterworld my beautiful @FarahKhanAli who I love very much.u think u guys cld help her forgive me, since I'm human n since its my b'day tom? :):):):) ? Love u all soo much !! ;)'

Farah Ali Khan didn't take time to forgive Hrithik, as she wrote, 'Happy B'day to a great soul, pure & giving. Love u Duggu. May u never experience a moment of sadness or a bad health. Love always'

Bipasha Basu wished Hrithik: 'Goodmorning all! Thank you for all the wonderful wishes on my BDAY!N let's al wish @iHrithik an awesome BDAY today!Love n Happiness!'

Arjun Rampal had kind words for Hrithik too: 'happy happy birthday Rockstar, fly high always, love you. See ya later.'

Actors tweeted about their busy schedules.

Akshay Kumar, who just got back from Phuket, Thailand, after shooting for his film Thank You, wrote: 'Finally we've jumped from the Ship & are now back on dry land :) Had my PATIALA HOUSE music launch 2nite,it was probably the most heart felt press conference I've Eva given'

Shahid Kapoor tweeted about his live performance, 'Blown ..... Half asleep .. Heading back homie ... 50 thousand people at the mosis mabida stadium .. Loved it'

Lara Dutta completed shooting for Chalo Dilli: 'And so off I go to shoot the last day of Chalo Dilli!! A feeling of contentment and a little sadness at the completion of a project.'

Amitabh Bachchan just got back home from 13th Asianet Film Awards, where he won the Lifetime Achievement Award.

He tweeted, 'What an evening ! Greats Mohanlal and Mamooty and tamil Vijay honoured. Most humbling and gracious evening for me ..they gave me Lifetime ..surprise, i was not told about it ..did songs scenes, very sweet.'

He added, 'Huge crowds and huge vociferous fans of MohanLal and Mammootty .. all so respectful and gracious ... such an emotional moment ..'