One of Beyonce's biggest fans has offered to buy the dress she wore to the Grammy Awards for $250,000.

The "XO" hitmaker, who caused controversy with her steamy performance at the ceremony in Los Angeles on Sunday night, wore a white and sheer gown by Project Runway designer Michael Costello on the red carpet and he is currently debating whether to sell the delicate ensemble.

"There's a guy who's an obsessive Beyonce fan who offered us $250,000 for the dress. It's crazy. I'm debating. I want to keep it! It's a dream come true," he told People.com.

Michael made six dresses for the 32-year-old star for the event and previously admitted he was wowed by her "tiny, amazing" body. The blonde beauty, who is married to rapper Jay Z with whom she has a two-year-old daughter Blue Ivy, reportedly dropped 70 pounds in recent months after following a largely vegetarian diet. Once known for her curvy figure, Beyonce is now said to be a size 2.

"It was incredible! We didn't have any of her sizes or measurements. The dress was just made to fit a sample mannequin. It's smaller than a size 4. She is tiny! That dress is at least a 2/4. She looks amazing. I just love the way it all came together. Ty [Beyonce's stylist] knew it was going to fit. At first I was a little concerned with the pieces I gave. Maybe it needs to be smaller or bigger? When you send something to Beyonce, you're just a little concerned, but Ty knew," Michael said.