Harry Potter Stars: Half-Blood Prince Photocall

They’re gearing up for the big premiere of “Harry Potter and the Half-Blood Prince” and earlier today (July 6) Daniel Radcliffe, Emma Watson, and Rupert Grint were spotted at a press photocall in London, England.

All three fan favorites looked to be having a marvelous time as they posed for the paparazzi at the Claridges Hotel.

And though he was all smiles, Rupert Grint had plenty to frown about, as he’s been battling the Swine Flu in recent weeks.

Having called in sick to the set of “Harry Potter and the Deathly Hallows” last week, Grint’s publicist told press, "It has just been confirmed that Rupert Grint has taken a few days out of filming due to a mild bout of swine flu. He has now recovered and is looking forward to joining his fellow cast members at the junket and premieres this week and will then return to filming directly afterwards."

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Enjoy the pictures from the "Harry Potter" photocall in London (July 6).