And there was more evidence the star could be changing two sets of nappies if clues from her recent baby shower are anything to go by.
The heavily pregnant singer-actress was the guest of honour at the event thrown for her in New York City.
The size of the star's bump has caused speculation she may be expecting twins
And her guests' choice of wrapping paper gave clear hints at the sex of J-Lo's babies.
Some people could be seen arriving with gifts wrapped in pink paper, while others had them wrapped in blue.
Lopez, 38, was accompanied to the event, held on the rooftop of the swanky Gramercy Park Hotel on Saturday, by husband Marc Anthony.
Dressed in a billowing frock coat and teetering on sky-high heels, it looked like P Diddy's former girlfriend was desperate to keep up her glamorous appearance before eventually giving birth.
The afternoon shower was hosted by Elaine Goldsmith-Thomas, who produced Lopez in the 2002 movie Maid in Manhattan.
Guests at the event included Jennifer's mother, Guadalupe Rodriguez, and U.S TV star Diane Sawyer.
Lope has so far refused to confirm if she is expecting twins.
But she fuelled the rumours by ordering designer beds for twins while on tour in Miami last year, and also reportedly buying bedding for twins from the luxury designer Nava.
J-Lo first announced she was pregnant last November after months of speculation.
She and Anthony, 39, have been married for three years.
