David Croft - who created her sitcom Are You Being Served? - unveiled a plaque in Mayfair to mark where the EastEnders actress grew up.
It's been placed on the Shepherd's Tavern, the pub Wendy's parents ran when she was a child.
Todd Carty, Natalie Cassidy, James Alexandrou and Les Dennis were just some of the stars who attended.
'She meant the world to me, like a second mum,' said Todd. 'She knew me from a very young age. We hit it off from the first minute.'
Wendy died of cancer in February aged 65.
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