Meryl Streep Debuts New 'Iron Lady' Poster and Trailer in U.K. (Video)

Meryl Streep Iron Lady Poster H 2011
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Approaching the arrival of her Margaret Thatcher biopic, Streep appeared in London to unveil the film's latest artwork, timed to the release of the first full-length trailer.

Meryl Streep joined director Phyllida Lloyd in London Monday morning to unveil new artwork for their latest collaboration, The Iron Lady.

A biopic of British prime minister Margaret Thatcher, the film marks a reunion for Streep and Lloyd, who worked together on Mamma Mia! in 2008.

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"I think Margaret Thatcher was a superstar in this country and I think we all felt we needed a superstar to play her," Lloyd said, reports The AP, "Somebody of huge intelligence, passion and power and warmth.

Lloyd defended her leading lady after an early British screening drew criticism from some for an unflattering portrayal of Thatcher.  "When they see Meryl's performance they will understand how much care and attention to Lady Thatcher's dignity she's given it," she said.

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Simultaneously, the official U.K. trailer for Iron Lady found its way online. The 2:36 spot is the first full-length look at the film, which has thus far only offered teases of Streep's transformation into Thatcher.

The Iron Lady arrives in North America on Dec. 30, with a British release following shortly on Jan. 6. Watch the trailer below: