Ms. Stefani Joanne Angelina Germanotta, aka Lady Gaga, has all the right numbers. Her Life Path number (derived from her birthday) corresponds to a '1'. And, really what other number could she possibly be! She has blazed a career for herself that only a '1' is capable of. She's all those good things that a '1' symbolizes e.g., leader, entrepreneur, self-starter, independent thinker, original.
And if that weren't enough, her Expression Number (derived from the letters in her name) is a '22' which is one of the two Master Numbers (the other is '11'). 'Our '22s' are the Master Builders of this world. Although they are visionaries, their heads are not in the clouds. On the contrary, '22s' have a firm footing in the material world and are able to see their dreams realized in a concrete and tangible fashion.
If you add up Gaga's birth month of March, which is '3' month, and her birthday of '28', you get '4' (after reducing '31' to its smallest digit), so there is the '4' again. I would venture to say that '4' will continue to have a special significance for her, so she should keep that in mind.
2010 is a '7' year for her and '7s' represent relationships. In Chinese numerology the number '7' is associated with weddings and good luck. The media report that Gaga has reunited with her ex-boyfriend, Luc Carl. Their names share both a vowel, 'a', and a consonant, 'l', which usually bodes well for a relationship as it's purported that if couples share letters it means they are a match. However, her three names all begin with '1' letters ('s', 'j' and 'a'), which I don't think his 'l' (a '3) can stand up to. '1s' are dominating and have a tough time compromising.
What's amazing about his name is it contains 5 '3s'. That's a lot of '3s' for such a short name which would indicate that his personality is pretty dominated by those traits associated with '3' and there is not much room for flexibility.