Coming soon, a Duck Dynasty wedding:

John Luke Robertson has got engaged to his girlfriend, Mary Kate McEacharn.

The Duck Dynasty star popped the question on his 19th birthday - Saturday, October 11 - and the couple took to Instagram shortly afterward to share the happy news.

John Luke also released a statement, telling Us Weekly: ‘I am so excited to marry my best friend.’

I wonder what the cake at a Robertson wedding looks like?