Miranda Lambert Blake Shelton break up talk is brewing. Country music's top power couple are reportedly headed for a messy divorce. Now that Black Shelton is coaching on The Voice, he has a new legion of fans, but Miranda Lambert is still talking baby bump.

According to The National ENQUIRER, Miranda Lambert and Blake Shelton "an ugly confrontation" over family planning.

An insider told the National Enquirer "Blake blind-sided Miranda by declaring on national TV that they aren't planning to start a family!"

According to OK! Magazine, Blake Shelton and Miranda Lambert have been "living separate lives" according to their sources. OK! Magazine posits that Miranda Lambert and Blake Shelton's breakup might be inevitable because because their relationship has become a long distance on.

On Sept. 19 OK! Reported that Blake and Miranda are in different places in their careers. Lambert has been focusing on her music and Blake has been in Los Angeles coaching for The Voice. The couple reportedly can't find time to be together.

A source told OK magazine "They can go days without speaking. They'll send a couple of texts, but that's all they have time for. It's taking a toll on the marriage."

The Miranda Lambert Blake Shelton breakup rumor was also fueled by photos of Lambert in Hawaii that were posted by Us Weekly, who noted Miranda was there alone.

The breakup rumors began on Sept. 15 when Blake was a guest on the Ellen DeGeneres Show and Ellen asked: "Blake, will you be reproducing soon?"

Blake haltingly answered "Ah...I mean...no!"

Ellen responded "I respect that, but no?"

Blake just said "No."

Us Weekly quoted a friend of Lambert's saying "Miranda was absolutely floored! She believed the only thing to save their marriage was a baby - and now it's not happening. On top of that, her good pal Carrie Underwood is now pregnant, and that's only rubbed salt in the wound."

Miranda Lambert and Blake Shelton are worth about $40 million. Blake earns another $10 million-a-year on top of that for coaching on  "The Voice." Shelton and his first wife Kaynette got divorced in 2006.