With Mother’s Day just around the corner, Keith Urban is planning something special for his wife Nicole Kidman.

But the country megastar isn’t spilling any details just yet.

He tells Access Hollywood his globe-trotting family will be altogether in one place this Sunday for Mother’s Day.

“I like planning a little something with the girls,” he says. We do things, so that Nic has a very special day. We try to make every day as special as it can be as well. We’re working on it. It’s a surprise. Nic could be watching this. We can’t divulge all the secrets.”

Most recently, Keith has been traveling to Australia during his time off on American Idol to be with his family while Nicole films a movie.

He’s set for a stop in Nashville on Tuesday for his annual We’re All 4 the Hall benefit concert for the Country Music Hall of Fame and Museum.