BACK TO WORK: Rihanna Lands In TOKYO For Huge Stadium Performances

Rihanna's beach days are over--for right now---as she's officially back to work.  The "Only Girl In The World" just landed at Tokyo Narita airport ahead of a huge gig.  Pics & deets inside....

Rocking her airport casual look of jeans and a tee, sneakers, and her new Gucci USA GG Flag Collection Boston Bag ($895).  The pop chick is across the world gearing up for her weekend performance at the biggest stadium concerts--Summer Sonic In Tokyo & Osaka.  Rih is performing Saturday and Sunday.

She appears to be hopping another plane to Osaka as she tweeted just a couple hours ago:

Osaka I'm almost there!!!

And it's also her dad's birthday today as she tweeted:

Happy birthday Daddy!!!! Me and pops spent his entire bday on the plane!!! SMH!!

The fashion-based reality series she produced, "Styled To Rock," also premiered this week on Sky TV in the UK.  Nice.

Pics: Getty