'So here goes! Jimbo and I are engaged!! Let's party my loved ones!!' she captioned a snap of the happy couple.
She added: '! P.S you know you're loved when you can eat a ham and cheese toastie in bed and your fiancé says that's beautiful.'
Weaving and new fiancé Jimmy have been dating since 2016.
Samara - who is the niece of The Matrix star Hugo Weaving - relocated to Hollywood and has since starred in the 2017 hit Three Billboards Outside Ebbing, Missouri.
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