The actor's confident appearance came as he gave a speech at the Annual Women In Hollywood awards on Monday evening.
But the reason for his buoyant mood was likely thanks to one woman in particular – Kristen Stewart.
The day before the event, Robert was pictured enjoying her company at the Ye Rustic Inn in Los Feliz – the same neighbourhood where the couple bought a $6.2million colonial style mansion.
A source for Entertainment Tonight claims the pair spent more than four hours at the bar with a large group of their friends, and even "cosied up to each other."
It was the first time Robert had been seen with his estranged girlfriend following her "momentary indiscretion" with married father-of-two Rupert Sanders.
Their meeting is the strongest indicator yet that Hollywood's most revered romance is back on.
Things have been smoothed over just as the latest instalment of their cult film Twilight is due to hit screens.
Both Robert and Kristen will make their first joint red carpet appearance since the split later this month while promoting The Twilight Saga: Breaking Dawn – Part 2.