J.Lo Upstaged by Sister in Racy Gown!

got upstaged by her younger sister Lynda Lopez in their dueling dresses while leaving Italian restaurant in on Thursday.

The 55-year-old New York Emmy-winning journalist normally dresses conservatively - but she dared to bare in a cleavage-boosting black cut-out gown that exposed parts of her torso, hips and legs.

The Grammy-nominated pop diva - who turns 57 on July 24 - flashed her legs beneath a sheer halter-neck nude-beaded gown, white feathered shawl and matching clutch selected by styling duo Rob Zangardi and Mariel Haenn.

Hairstylist Justine Marjan slicked back 's locks into a tidy bun and make-up artist Rokael Lizama fully contoured her suspiciously-unlined complexion.

The Bronx-born siblings have been holding court front row at numerous Fall/Winter Haute Couture runway presentations this week.

In 2021, Lynda called JLo her 'original BFF' and her 'ride or die' in a birthday tribute on Instagram five years ago.

'I love you more than words can say,' the 1010 WINS at 92.3 FM reporter gushed.

'You light the world and show me what's possible and are my inspiration always. Sometimes I can't believe I was so lucky that God put the beautiful soul that is you into my life.'

The Nuyorican Productions co-founders - who used to run the Lopez Family Foundation - even got pregnant at the same time, and watched as their children graduated college last month.

Lynda welcomed her 17-year-old daughter Lucie Wren Lopez-Goldfried with ex-boyfriend Adam Goldfried while JLo welcomed her 18-year-old fraternal twins - Emme Muñiz (aka Oskar) and Max Muñiz - with third ex-husband Marc Anthony.