And while the responses varied from horrified to flirty, it was the reply from ex-fiancée Elizabeth Hurley that has got us giggling.
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“Good god – a beard????” the British actress wrote below his post.
Warnie’s 18-year-old son Jackson was also not impressed and even made fun of his dad in his response which read: “#Akermanis” – referring to ex-Aussie football star Jason Akermanis who is known for his bleached blond hair and dark brown facial hair.