Is Robert Pattinson & Sienna Spicing Up?

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This Twilight actor, who is known to be every woman's dream man considers himself the best and thus it was also noted that the actor was seen with Sienna Miller at a late night after party here in London, recemtly. There was no speculation that the two of them are secretly pairing up though, because Sienna Miller looks to be committed to her co star of Bel Ami, who she claims to say she is passionately in love with. Leaving Robert Pattinson's hotel at 3:30 am surely does not mean that there is something brewing between the hot actors, right? It could just mean that the two of them wanted to spend them alone, getting to know each other!

Meanwhile, on one hand, Robert Pattinson, who is at presently with his crew of 'Water For Elephants', is also enjoying himself partying all night and waking up at wee hours of the morning, while his girlfriend, Kristen Stewart is dog walking his pet, Bear!