Miley Cyrus 'Twerks' on Mike Will Made It Amid Liam Hemsworth Cheating/Break-Up RUMORS [PHOTOS]

Earlier this week, Miley Cyrus and Liam Hemsworth officially called-off their engagement. Rumors suggest that BOTH stars were cheating on one another during the relationship. Apparently, 20-year-old Cyrus even "hooked up" with "Bangerz" producer Mike Will Made It. Even if the "Wrecking Ball" songstress didn't actually cheat, she DID practice some twerking dance moves on Mike Will Made It during a recent Terry Richardson photo shoot...

Celebrity photographer Terry Richardson posted these snapshots on his blog on Thursday (Sept. 19):

Nothing too scandelous, but still...

FYI - Richardson directed Cyrus' sexy music video for "Wrecking Ball"... these photos were apparently taken during the shoot.

Cyrus insists that her relationship with Mike Will Made It is purly professional... but several reports allege that the two "hooked up" while working together. What do fans think?