Marc Anthony and Jennifer Lopez
02/22/2008 AT 01:15 PM EST
Good news travels fast, and when Marc Anthony's sister found out about the double blessing he and wife Jennifer Lopez
had early Friday morning, she was overjoyed.
"I learned this morning. I'm ecstatic, I really am. I'm happy for her," Yolanda Santa Maria, Anthony's older sister, told PEOPLE Friday after hearing the birth news
on Good Morning America
. "She's a mom for the first time. I can just imagine the euphoria she's going through."
And as for her brother? "It's another two blessings for him. He beat me – I have four [kids] and now he has five. I'm so happy for him. I don’t even know what to say. It's like if I had the babies."
Santa Maria, who expects to meet her new niece and nephew soon, added,
"I can't wait to see them, I can't wait to meet them. Words don't even begin to express how happy I am for them."
PHOTOS: See Jennifer's Baby Style
and Remember When: J.Lo and Marc's Newlywed Life