Sarah Hall Thu Feb 21, 6:08 PM ET

Los Angeles (E! Online) - Just call her Mommy from the block.

Jennifer Lopez and husband Marc Anthony welcomed twins early Friday morning, a son and a daughter.

After multiple false alarms over the past few weeks, set off by extra security, over-eager tipsters, etc., the babies were born at 12:45 a.m. ET at a Long Island hospital, J.Lo's rep, Simon Fields, told People.

This is the couple's first children together. Anthony also has two sons and one daughter from two previous relationships.

Lopez, 38, finally spilled the beans about her expectant status in November, months after the rumors that she was pregnant began.

"We didn't want to say anything before because we didn't want to take away from the tour, but we're expecting," she told the audience at the final concert on her joint tour with Anthony.

Not that she was under the illusion that people thought her swelling figure was due to anything other than baby weight.

In an interview in February's Harper's Bazaar, Lopez said she felt like the world already knew she was pregnant long before her announcement, given that she was "on tour with a bubble gut!"

However, she said her choice to try and keep the pregnancy private for as long as possible was important to her.

"I do realize people want to know because they're interested, but this is the first time I'm going through this," Lopez told the magazine. "This is my experience and my husband's experience, and we get to hold that for a little while."

The couple, who tied the knot in June 2004, celebrated their impending parenthood earlier CQthis monthCQ with a baby shower in New York.