Playing famous people comes with myriad challenges and Gillian Anderson had it tougher than most when she took on British Prime Minister Margaret Thatcher in the new season of The Crown without any special effects. Thatcher enters the Netflix television series portraying the British royal family as it moves into the 1980s, when the polarizing Conservative Party leader was at the height of her power. Anderson said she used no prosthetics, not even teeth, but relied on body language and vocal idiosyncrasies to capture Thatcher’s appearance. “It came down to holding my mouth in the right way,” Anderson said. “Then she had very specific mannerisms in terms of how she cocks her head, and how she leans forward. “You start putting those things together and at some point you end up in the realm of Margaret Thatcher,” said Anderson. Thatcher was Britain’s first female prime minister and her 11-year-term in office was the longest of the 20th century. She died aged 87 in 2013. The new season of The Crown, released on Netflix on Sunday, covers the escalation of conflict in Northern Ireland and the Falklands War.