Bollywood celebrities like Karan Johar, Arjun Kapoor and Shraddha Kapoor have hoped "Student of the Year" actor Varun Dhawan, who turned 28 on Friday, evolves and has a rocking year ahead.

Here's what they tweeted:

Karan Johar: Happy birthday @Varun_dvn !! Evolve, search and aspire.... Make the year count!!! All my love...always!!

Riteish Deshmukh: Happy birthday my friend @Varun_dvn - have a rocking year ahead.

Arjun Kapoor: My first director @Varun_dvn s birthday today...happy birthday Bombay ka Brahma Bull...being filmy since 1987...

Shraddha Kapoor: Happy bday to my friend with a heart of gold, who never forgets to spread love & positivity everywhere! @Varun_dvn

Nargis Fakhri: @Varun_dvn Happy Birthday 2my favorite. I wish u the happiest bday &many more 2come. May u stay beautiful on da inside as u r on the outside

Milap Zaveri: A very Happy Birthday to the "Hero" Seenu aka @Varun_dvn Tu Sach mein ABCD hai! matlab "Amazing Bindaas Cool Dude!" Have a super year buddy!