SINGAPORE - The eighth edition of the Singapore Grand Prix is not quite in full swing yet, but the 20 drivers who are set to do battle on the stunning Marina Bay Street Circuit on Sunday (Sept 20), are already busying themselves here.

Workaholics Sebastian Vettel of Ferrari, a three-time winner (2011-2013) in Singapore, and Felipe Massa of Williams got straight down to business and posted pictures of themselves on social media inspecting the race track.

Others were spotted giving their attention to fans. Reigning F1 champion and last year's Singapore GP winner Lewis Hamilton was busy charming his fans while Mercedes driver Nico Rosberg gave out bracelets to a couple of lucky female supporters. Meanwhile McLaren's Fernando Alonso seemed amused by an overexcitable fan during one of his autograph sessions.

Red Bull's Daniel Ricciardo opted for a more enigmatic approach with his post, putting up an Instagram photo of a hotel room door with the caption "Fetty stayin here", while McLaren's Jenson Button zoomed in on a pair of cute teddy bears when he arrived at his hotel room.

And of course, no Singapore GP would be complete without the requisite breathtaking aerial shots of the winding circuit in all its night glory.

More than 220,000 Tweets with the hashtag #SingaporeGP have already been made this week, Twitter said on Friday.

Hamilton will be bidding to make history during Sunday's race, but he is already in first place as far as Twitter popularity is concerned. The Briton is the most-followed F1 driver on the social media platform.

Hamilton is also the owner of the most-shared F1 tweet this week. He posted a quote from legendary F1 driver Ayrton Senna, whose records he hopes to tie this weekend.

Here's an interactive chart of conversation including #SingaporeGP: