Megan is still a bigger sex symbol than Angelina Jolie (To whom she is compared in the OP).

I choose Gaga.

I'd say Gaga because Megan willingly lives the life of a hermit. She got married, had a kid and is pregnant with another one I don't think she has any interest in being super famous.

Hollywood pays her dust; she has nothing better to do than to start a family.

basically this . megan only has transformers really.

You guys try to make Gaga's "decline" bigger than it really is, it's hilarious but Megan Fox is the answer to your question, I guess.