Kellie Pickler and Kyle JacobsKellie Pickler is getting married!

The former 'American Idol' contestant, who now makes her rounds on the country music stage, will wed her boyfriend, songwriter Kyle Jacobs, PEOPLE reports.

Jacobs proposed on June 15 -- which is normally a "sad and hard" day for Pickler because it was her late grandmother's birthday. But the question changed everything.

"It turned out to be the most amazing day of my life. My whole world changed. We both feel like we got my grandmother's blessing," she tells PEOPLE.