Natalie Portman: Adoring in silver

Natalie Portman poses on the red carpet at the world film premiere of 'Thor, The Dark World' in central London. (AFP)

Tom Hiddleston, Natalie Portman laugh as they arrive on the red carpet for the premiere of “Thor: The Dark World” in Leicester Square, London. (AP)

Natalie Portman and husband Benjamin Millepied. (AP)

Chris Hemsworth, Natalie Portman and Tom Hiddleston pose for photographers as they arrive for premiere "Thor: The Dark World" in Leicester Square. (AP)

From left Adewale Akinnuoye-Agbaje, Chris Hemsworth, Jonathan Howard, Kat Dennings, Stellan Skarsgard, Natalie Portman and Christopher Eccleston, Tom Hiddleston and Idris Elba pose for photographers as they arrive for the premiere of “Thor: The Dark World” in Leicester Square, London. (AP)

Natalie Portman signs autographs for fans. (AP)

Tom Hiddleston greets Natalie Portman. (AP)

Natalie Portman (AFP)

Chris Hemsworth, portraying superhero Thor, and Natalie Portman, portraying jane Foster, are shown in a scene from the film, "Thor." (AP)