She's Just So Happy!

Have You Ever Seen TVD's Nina Dobrev Looking Sad?

It's fair to say that Nina Dobrev of The Vampire Diaries fame, is one constantly happy bunny.

Whether she's on the red carpet or just chilling out with her friends, we have never seen the 25 year-old look unhappy.

Sure, the celebs on the red carpet can't look moody when they're having their pictures taken but Nina always has a smile on her face. She's not adverse to pulling the odd funny face either - especially during her interview with Mario Lopez.

 She's just so smiley! (WENN)

But red carpet and interviews aside, Nina also shares her positive energy via social networking.

Keeping active on her WhoSay account, Nina is constantly posting positive messages and sharing wonderful, happy images of herself enjoying life with her gal pals.

So take a look below and smile, all thanks to Nina...

For all we know, Nina's feet could have been killing her in those heels but she smiled away! (WENN)

Be careful Nina! On a nice day like that, a bug could have flown straight into her mouth. Yuck! (WENN)

Mario Lopez must have been a really good joke teller! (WENN)

Move over Miley! Nina shows the former Hannah Montana star how it's done! (WENN)

We wonder who has caught Nina's eye...(WENN)

Did someone just fart? (WENN)

There's nothing cuter than a smiling tiger (Nina Dobrev / Instagram)

It might be cold but at least life is fun!  (Nina Dobrev / Instagram)

Say cheese horsey! (Nina Dobrev / Instagram)