A host of Bollywood celebrities like Arjun Rampal, Diya Mirza and Bipasha Basu have wished good luck and success to superstar Shah Rukh Khan on his birthday Tuesday.

The actor, who turned 45, is in Berlin to shoot for his forthcoming film "Don 2". However, his colleagues reached out to wish him through micro-blogging site Twitter.

Bipasha Basu: Happy birthday! Super super super star! Rise and shine even more.

Arjun Rampal: "Have a fabulous day and a fantastic year. We will miss you here in Mumbai, big hug!"

Riteish Deshmukh: Wishing my favourite actor Shah Rukh a very yuppieee burrday. Knowing him and watching him is a constant learning experience. Big Hug

Diya Mirza: Happpppy Birthdayyyy!!! You are the Best! Have a fantastic day and year ahead. We love you!

Farah Ali Khan: Wishing you a very happy birthday and years full of happiness, health, wealth, prosperity and lots of love always.

Genelia D'Souza: May your birthday be filled with love, luck and happiness. Have a great day!

Jay Sean: Have a great year - much continued success. Bless.

Vishal Dadlani: Hope you have your most spectacular year yet, and then successively better ones.

Shah Rukh's best friend Karan Johar, who was supposed to be with him in Rome for the red carpet of their film "My Name Is Khan" last week, posted: "So its SRK'S birthday... a Tweet is warranted! To the man responsible for my career and dreams! Thank you... and love u lots bhai (brother)."

Actor Roshan Abbas too gives a lot of credit for his career to Shah Rukh.

"Amongst the millions, here is one who owes you a lot! Hope I can pay back all the favours one day! Happy birthday boss," posted Abbas.