Peek-a-boo! We see you!

Jennifer Lopez’s dress was the talk of yet another awards ceremony, this time at Sunday’s Oscars presentation, which took place at the Hollywood & Highland Center in Los Angeles, Calif.

The singer had a wardrobe malfunction while presenting the Academy Award for Best Costume Designs and Make-Up with fellow Latina and “What to Expect When You’re Expecting” co-star Cameron Diaz.

Latinos Dazzle On Oscar Red Carpet

Lopez, 42, looked stunning as she worked the red carpet in wearing a cut-out see-through Zuhair Murad gown which had a plunging neckline reminiscent of her 2000 Grammy awards green Versace dress.

She then changed into a similar, maroon colored dress for the Vanity Fair Oscars after party, hosted by Graydon Carter at the Sunset Tower in West Hollywood, Calif.

Photos: What's Jennifer Lopez Up to?

As JLO excitedly began giving her speech with Diaz, her left nipple was peeked out, setting Twitter ablaze.

In a matter of minutes the tending topic became “#JLO’s” and the Twitter account “@JLO’sNipple” was created.

“#J.Lo's dress was lovely. Simple with just a hint of aureole,” “Queer Eye for the Straight Guy” fashion expert and Dancing with the Starts alum Carson Kressley tweeted.

Others couldn’t believe Lopez had a malfunction so soon in the broadcast.

“Is it just me, or were part of J-Lo's nipples on display...?#jennyneedsabra #Oscars” Savannah Harden Tweeted.

This isn’t the first time the fans get an unexpected eyeful of JLO.

Last year, Lopez's left breast did a slight peek-a-boob at the 'Wetten dass' Summer Edition event, a concert in Mallorca, Spain.

She was wearing a loose dress with a plunging neckline.

Lopez was also concerned with her dress flying up, exposing her rear, since the dress had an high-cut slit in the front.

Prior to the nip-slip, Lopez and Diaz were both praised on Twitter and on the red carpet for their dresses by fashion guru, “Project Runway’s” Tim Gunn.

“I’ve always loved fashion,” Lopez told Gunn when asked about her revealing gown and how her style has evolved over the years. “I enjoy playing dress up. I’ve been exposed (no pun intended) to so much.”

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Lopez said that at the beginning of her career her style was “street and hip/hop-ish” because she’s from the Bronx, and that she will always have a little of that in her style.

Diaz sported a fitting Gucchi gown.

“Tonight is all about old Hollywood glamour,” Gunn told Diaz. “You personify that perfectly.”

Later in the evening, Diaz was seen laughing and giggling next to Diddy, Lopez’s old flame. This comes weeks after the two were caught making out multiple times in various hotels in NYC and Beverly Hills, Calif.

You can reach Alexandra Gratereaux at: Alexandra.Gratereaux@foxnewslatino.com or via Twitter:@GalexLatino

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