Some might argue that the best part of the MTV Video Music Awards is what happens between the performances. (Kanye West interrupting Taylor Swift’s acceptance speech, for example.) But the performances themselves can be equally shocking!

Take 20-year-old Miley Cyrus grinding on 36-year-old Robin Thicke as he sang "Blurred Lines." Uh, is that OK?

Scroll down for that performance and more.

And be sure to check back here all night tonight, August 25, as we bring you all the musical moments!

Miley Cyrus, Robin Thicke, and 2 Chainz Perform "We Can't Stop," "Blurred Lines," and "Give it 2 U"

Ariana Grande Sings "The Way" and "Baby I"

Lady Gaga Performs "Applause"

Austin Mahone Performs "What About Love"

Kanye West Performs "Blood on the Leaves"

Justin Timberlake and *NSync REUNION PERFORMANCE!

Drake Performs "Hold On We’re Going Home" and "Started From The Bottom"

Bruno Mars Performs "Gorilla"

Katy Perry Performs "Roar"