The Fashion legend has designed the clothes the eccentric singer wears for her 'Monster Ball' concerts and is thrilled with the results.
He said in a statement: "Her energy, eccentricity and her extraordinary interpretative talent come over at their very best in a live context. I am absolutely delighted to have contributed both clothes and accessories to these appearances."
It is not the first time Gaga has teamed up with Armani and the 24-year-old star was "honoured" when he agreed to dress her for the Grammy Awards in February.
The designer created custom pieces for her to wear on the red carpet and during her performance at the prestigious ceremony, including a lilac and silver space age, solar system-inspired stiff-skirted gown.
She said: "I am honoured to be wearing Armani this evening. The series of pieces Mr. Armani created for me are truly iconic; they represent not only beautiful fashion, but my spirit and essence as an artist. Mr. Armani is a fashion legend, and tonight would not have been the same without his touch, and his wonderful team."