The 'Rocket Man' hitmaker wanted to show the 'Poker Face' singer his appreciation after she performed at his White Tie and Tiara ball on Thursday night (24.06.10) and soon found the perfect gift when he gave her a tour of the home he shares with partner David Furnish.
A source told The Sun newspaper: "Gaga had a tour of his home and was awestruck by his china collection. She kept complimenting him on it.
"He was tickled by her fascination so presented her with a set.
"She was thrilled with the present. It was a vintage set and probably worth quite a lot of money."
The ball – which was attended by guests including Peter Andre, Liz Hurley, David Walliams and his new wife Lara Stone –raised over £5.6 million for the 63-year-old singer's AIDS Foundation.
Gaga – whose real name is Stefani Germanotta – famously carries her own china teacup and saucer everywhere with her and refuses to drink out of anything else.
Last year, she spent over £35 on a taxi ride to retrieve the crockery after accidentally leaving them in a restaurant.
Following the attention her obsession with the cup received, the eccentric singer admitted she was "jealous" of it.
She said: "My teacup is so famous. I yelled at her today I said, 'You're stealing my thunder go to bed!'
"You know now it's a gimmick and it's just my teacup. That's my teacup that I like to take everywhere it makes me feel at home. It's become a celebrity."