On what page or chapter does Humbert talk about him being attractive to Lolita (when he says he resembles famous people she has a crush on)?

Nabokov indeed portrays Humbert as being conscious of the
fact that he can be very attractive for a preteen girl. He figures himself as a living
personification of the male movie stars Lolita admires most. He literally says: "I have
all the characteristics which, according to writers on the sex interests of children,
start the responses stirring in a little girl: clean cut jaw, muscular hand, deep
sonorous voice, broad shoulder. Moreover, I am said to resemble some crooner
or actor chap whom Lo has a crush." (34) This occurs in Chapter 11.  Later
on, Humbert notices a poster of a handsome model in Lolita’s room: “Lo had drawn a
jocose arrow to the haggard lover’s face and had put, in block letters: H.H.”
(69)

REFERENCES

Nabokov,
Vladimir (1989), Lolita, New York: Vintage.