UPDATE: More photographs of Valentino Rossi's test Yamaha M1 - including a front-end shot - have surfaced. Scroll down to view the full gallery. Pictures courtesy of Gold and Goose

The machine Valentino Rossi will ride in the first MotoGP test of the 2013 season at Sepang this week has taken a bow... via its very own Twitter account.

As if to personify the bike ahead of Rossi's much anticipated return to Yamaha in 2013, the @YamahaYellow46 account has been created and has since begun updating with photos and tweets.

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One of the photos reveals the bike Rossi will ride in Malaysia, the Yamaha M1 shown to be decked out in a silver and black livery similar to the design he rode during weather-affected 2012 post-season testing. Notably, however, the M1 now bears Monster's distinctive logo following the confirmation it will co-sponsor the team in 2013.

Rossi will ride the bike over three days of official MotoGP testing at Sepang alongside team-mate and reigning champion Jorge Lorenzo, beginning on Tuesday and ending on Thursday.

Since going live in November, the @YamahaYellow46 account has already managed to notch up more than 5,000 followers.