The flamboyant superstar, 41, gifted his daughter Iyanna Mayweather a massive 30-carat diamond ring worth $5 million for her 18th birthday.

[No available link text]

Uploading a picture of the ring on her Instagram story, Iyanna captioned the image: "First Birthday gift I'm so in love. Thank you so much, dad."

READ MORE: Veteran singer talks nudity and fame

After following up with a photo, she wrote again: "I just can't stop staring at it."

Musicians Drake and Future performed at her bash, while Justin Bieber recorded a special message for Iyanna.

See photos of her Iyanna Mayweather: