Jennifer Lopez says pregnancy has helped her "evolve".

The 38-year-old singer - who is due to give birth to twins later this month
- admits the prospect of motherhood has forced to her "grow up".

Jennifer - who is married to singer Marc Anthony - said: "I am at the
beginning of a huge change. I think everyone is constantly changing and
evolving, new things are becoming important in our lives all the time - and
never more so than for me now.

"The whole growing up thing, maturing - its' difficult but everyone has to
do it."

This week Jennifer's father confirmed his daughter is expecting twins.
David Lopez said: "It's, twins. The thing is, in my family, my sister also
had twins, so it's a hereditary thing.

"I'm very proud. Jennifer has yearned to be a mother for many years."

David, who comes from Puerto Rico, has already bought traditional gifts for
his unborn grandchildren.

He said: "In Puerto Rico it's custom to buy an azabache (black stone)
bracelet for babies to protect them from the evil eye, it's part of our
culture."

Jennifer sparked rumors she was expecting twins by purchasing matching pink
and blue romper suits embroidered with the words "prince" and "princess".

It was recently revealed Jennifer and Marc are planning to call their unborn
twins Max and Emme, after J.Lo's mother Guadalupe was seen buying engraved
gold bracelets in New York.

A source said: "The day before J.Lo's baby shower, Guadalupe picked up two
gold-rope baby ID bracelets engraved with the names Max and Emme from a
jewelers in New York."

JLo just wants to punch out her husband sometimes.

Speaking at the Marchesa fashion show, she told People magazine: "Right now
the best thing I can do for myself, for my body, is to keep resting which is
not easy for me.

"I like keeping busy and it is very hard because if they say, 'Be off your
feet for four hours a day!' I'm like, 'Oh my God!' It's just so hard!"

(More Pics of Jennifer Lopez at UNICEF)