Lisa Haydon: We can change our future!

A look at the top tweets from your favourite Bollywood celebrities:

Several Bollywood celebrities took to Twitter to pledge their support to UN's latest campaign Action 2015, which aims to fight against world poverty and climate change. Here's what they said:

Lisa Haydon: It's time to protect people and planet. Join @action2015 and together we can change our future #action2015.

Akshay Kumar: Now is the time for action!Join @action2015 & raise your voice for a better future #action2015.

Anupam Kher: 2015 could be a turning point in history, join me and @action2015 and make our voices heard.:) #action2015?

Ritesh Sidhwani: Hey! Need all u friends out there to lend your support to #action2015. Please endorse this by retweeting & sharing.

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Happy birthday, Kabir Bedi

Kabir Bedi, who has acted in over 60 Bollywood films, celebrated his 68th birthday on January 16.

His girlfriend Parveen Dusanj wished him on Twitter: 'Happy, happy birthday @iKabirBedi Rock'n roll all the way.'

Shekhar Kapur tweeted: 'Happy Birthday Big Daddy.'

Bedi will be next seen in Ashutosh Gowariker's Mohenjo Daro.

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Atif Aslam returns to Bollywood

Pakistani singer Atif Aslam, who has sung the romantic track Jeena Jeena in Badlapur, will release a special video of the song on January 19.

'Hey guys, I'm back with a romantic number for @BadlapurFilm. Watch #JeenaJeena's music video on Jan 19th,' Aslam posted.

Meanwhile, Yami Gautam is enjoying the track. 'Have a reason to wait for the boarding call while I am at Chandigarh airport, with a smile..listening to #JeenaJeena #loveitmore,' she tweeted.

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Ajay Devgn pierces his ear

Ajay Devgn, who recently got his ears pierced, shot with celebrity photographer Atul Kasbekar for an advertisement.

Atul shared shared a picture (above) and tweeted: 'Killer shoot for a new ad campaign wt @ajaydevgn Styled by the fab @kunalrawalvibe.' 

Meanwhile, Ajay has signed Bhushan Kumar's upcoming production Baadshaho.

Confirming the news, director Milan Luthria tweeted: 'Shooting starts in second half of 2015.'

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Nimrat Kaur's passport woes

The Lunchbox actress Nimrat Kaur, who was seen in the latest season of the American television series Homeland, is having passport issues. She turned to Twitter to vent her frustrations: 'It's so sad how passport work in #Ghaziabad remains as archaic and impossible since I can remember. So trying and disappointing!'

'Met a super polite, helpful officer. But the problem is overworked staff,one office for 16 districts. Effective change needed asap,' she added later.

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When Kapil Sharma called Priyanka Chopra bad

Comedy Nights With Kapil host Kapil Sharma joked about his alleged fight with Priyanka Chopra during Star Guild Awards and tweeted: 'U r very bad @priyankachopra u didnt even told me that v fought with each other on award function.. Jus saw in news n got to know .. Hahaha.'

Congratulating her, Sharma added: '@priyankachopra big congrats to my favourite who has bagged all the awards this year .. Well deserved .. Hero amongst Heroes.'

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It's a wrap for Onir's Shab!

Raveena Tandon, who recently completed shooting for Onir's Shab, shared a picture from the sets (above) and tweeted: 'Last day @Shab shoot !! Windup for my character #sonalmodi thanks @sanjaysuri @IamOnir fabulous time! miss the fun.' 

The movie also features Ashish Bisht, Arpita Pal and french actor Simon Frenay.