Montag is best known as Lauren Conrad’s frenemy onLaguna BeachandThe Hills(perIMDb).

“It was a natural formation.

That set the standard.

Taylor Momsen singing

Then [guitarist] Ben Phillips and I wrote all songs together.”

Thus, launched the band The Pretty Reckless, with Momsen at the helm.

A song from Taylor’s past caught Heidi’s eye.

Heidi Montag posing

Heidi started working on her own music career around the same time.

For her debut album,Superficial, Heidi fell in love with a song penned by Momsen.

“Believe it or not, Taylor Momsen wrote ‘Blackout’ with Cathy Dennis.

But I didn’t know that until I cut it,” Heidi toldLife & Style Magazine.

It really felt like my anthem for Spencer.

It was just sous, and explained perfectly how I felt about being with him.

But that’s how much they loved it, too.

So I think ‘Blackout’ is forever one of my favorite songs."

Momsen was amused by Montag’s affinity for the song.

and I’m like ‘What?'"