A-List Insider: Blake Shelton and Miranda Lambert cheating scandal and Andy Grammer compared to John Mayer

In this week's A-List Insider:

Blake Shelton and Miranda Lambert are hit by a cheating scandal, Miley Cyrus prepares to take over this year's MTV VMAs, and Andy Grammer is compared to an even bigger star.

Cheating revelations in Shelton and Lambert divorce

Blake Shelton and Miranda Lambert's surprise split just took a shocking twist.

According to TMZ, the reason that the country power couple are getting a divorce is because the Little Red Wagon singer cheated on her 39-year-old husband.

The site claims that Blake had suspected for months that Miranda was being unfaithful - not once, but twice - and he finally threw in the towel earlier in July.

Since the pair tied the knot in 2011, their marriage has been blighted with reports of infidelity and there were rumours that their relationship was strained.

"This is not the future we envisioned and it is with heavy hearts that we move forward separately," they said in a joint statement.

What a sad day for love.

Country singers Blake Shelton and Miranda Lambert announced the end of their four-year marriage on 20 July REUTERS/Eric Henderson

Miley Cyrus to host MTV VMAs

Elsewhere in the world of music, Miley Cyrus has announced that she will host this year's MTV Video Music Awards (VMAs).

In classic Miley fashion, the singer confirmed that she will be twerking back to the annual ceremony this August, on social media. She shared a split screen photo of herself dressed as a green alien holding two sandwich boards that read "MTV won't let me perform so I'm hosting this year's VMAs"

The 25-year-old pop star's return to the stage comes two years after she officially killed of her Hannah Montana alter ego by grabbing Robin Thicke's crotch during their raunchy performance back in 2013.

The VMAs will air on 30 August. Knowing Miley, it's safe to say, expect the unexpected.