With a 4-week #1 song under her belt, Katy Perry celebrated by treating her mother to a facelift.

The “California Gurls” singer splashed out on a skin-tightening operation for her mother Mary Hudson, and her Christian pastor father Keith Hudson is so pleased with the results he has been bragging about how “amazing” his spouse looks.

“My daughter, little Katy Perry, bought my wife a facelift. Hallelujah! My Lord, does she look good. It is amazing what they can do. They took 25 years off her. I am serious - it’s amazing. I don’t know how I am going to handle this. I mean, she doesn’t look like her mother no more, she looks like Katy Perry’s sister. It’s going to be difficult because they’re going to say, ‘Who’s this old man with Katy Perry and her sister?’” the reverend told his congregation at The Way Family Church in Temecula, California.

Katy treated her mother to the operation in the run up to her own wedding to Russell Brand in September. Before they started dating, the comic was known for his womanizing ways but Keith is hopeful he will convert to Christianity and calm down once and for all.

“That Russell Brand - he’s a prayer challenge. He is searching for God and that boy is going to get saved. If he’s going to hang around us, he’s going to fall in! He’s hungry for God.”