The glamour model has launched a poster campaign for animal rights group PETA in which she just wears a bikini, with her body parts labelled as 'breast', 'rump' and 'leg', to mimic a butcher's diagram.
Anderson said her talk at Oxford University would start with a video promoting vegetarianism.
While at the poster's launch in London's Covent Garden recently, she said: 'We're going to talk about vegetarianism, starting with the Glass Walls documentary that Paul McCartney narrated.?
'Then we're going to talk about all the environmental issues, the moral issues, how it's better for your health.'
The 43 year-old added: 'The biggest issue that I like to talk about is the cruelty that goes into killing animals for slaughter.'