A man in pink sunglasses helped attack and rob a 19-year-old man outside a Queens karaoke bar, police said Friday.

Video of the incident shows the suspect loitering outside the K Show Lounge in Flushing around 5:20 a.m April 28 before suddenly running toward the victim and jumping on him from behind.

The assailant ripped off the victim’s necklace and an earring, police said.

The victim told cops at least seven people were involved in the attack. He was not seriously injured and refused medical help, police added.