Two of country's biggest stars are collaborating on one huge event -- a wedding!
According to PEOPLE, Blake Shelton propsed to Miranda Lambert in the woods near her Oklahoma home on Sunday ... after getting her father's permission.
In true country fashion, Lambert says the two celebrated the engagement with "Bacardi and Diet Sprites – in a Solo cup!"
Both Lambert and Shelton -- who started dating in 2006 -- were also nominated for CMT Awards earlier this morning.
This will be Blake's second marriage, Miranda's first.
