The 28-year-old beauty was dating the 'Glee' star when he tragically passed away at the age of just 31.
She wrote: ''I know you would want us all laughing and smiling today..
''So we think of you and remember all the laughter and joy we shared together. I hold you in my heart always and love and miss you so... (sic)''
Meanwhile, the former couple's co-star Kevin McHale previously revealed he felt as though 'Glee' never recovered following the death of Cory, who played lead character Finn Hudson in the show.
He said: ''When Cory Monteith died, I don't think the show ever came back from that.
''It wasn't for a lack of trying ... I think after that the vibe onset is different. It was just weird for us being there never mind actually filming.
''Being one of the writers in that sort of situation I wouldn't know what I would've done because I was like, 'I don't even really want to be here.'''
Thirty years ago the landscape of popular music was changed forever when Nirvana released their seminal, era defining second album, 'Nevermind'.
The latest tour and festival announcements for September 24th 2021.
Have a spookily musical Halloween this year.
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