Gossip Girl star Kelly Rutherford, 55, sends social media into a frenzy after flaunting her washboard abs in tiny crop top

Gossip Girl star Kelly Rutherford has sent social media into a frenzy after flaunting her enviable physique.

The 55-year-old regularly posts pictures of her daily ensembles but most recently captivated fans by sharing a glimpse of her washboard abs.

She took to Instagram earlier this week with a series of snaps posing in a black RXQUETTE pinstripe three-piece suit that featured a cropped vest.

And fans were quick to heap on the praise for her impressive figure. 

Gossip Girl star Kelly Rutherford has sent social media into a frenzy after flaunting her enviable physique

The 55-year-old regularly posts pictures of her daily ensembles but most recently captivated fans by sharing a glimpse of her washboard abs

In the snaps, taken in Paris, France, Kelly donned the brand's $342 pinstripe wool vest and matching $447 suit pants.

The mother-of-two looked effortlessly chic with the accompanying $730 blazer slung over one shoulder.

Kelly completed the elegant look with a pair of $450 chic black L.G.R. sunglasses and $130 white sneakers from SeaVees - with the whole look adding up to more than $2,000.

The star was photographed both standing and squatting against as she stood on the sidewalk against a neutral beige backdrop.

She uploaded the snaps alongside a simple caption of two emojis - a white heart and a coffee cup.

Many of her 2.1 million followers flooded to the comments to heap praise on the outfit with Gossip Girl references - before also gushing over her impressive figure. 

One person wrote: 'Holy s*** those abs,' and another person added: 'Her abs, omg.'

Someone else wrote: 'SHE IS ICON. SHE IS LEGEND.'

Many of her 2.1 million followers flooded to the comments to heap praise on the outfit with Gossip Girl references - before also gushing over her impressive figure 

Another insisted she had 'always been THAT girl' with a fourth declaring: 'Fashion mother is motheringggg.'

This isn't the first time that the actress has sported an outfit that showed off her abs.

In February, the Gossip Girl actress took a picture in her Lauren Active Suit ($325) by the brand Port de Bras, which features two cutouts that are located above and below the bandeau-esque top.

And, in March, Kelly took a mirror picture in a fitting room, while trying on a little black ankle-long dress by St. Agni, called the Classic Side Detail Dress ($445), which features vertical cutouts that can be adjusted on the sides of the upper waist.

When it comes to Kelly's youthful style inspiration, she credited her 'lifestyle,' exclusively with DailyMail.com.

This isn't the first time that the actress has sported an outfit that showed off her abs. In February, the Gossip Girl actress took a picture in her Lauren Active Suit ($325) by the brand Port de Bras

In March, Kelly took a mirror picture while trying on a little black ankle-long dress by St. Agni ($445)

'Most of it is really just lifestyle, I think. I mean obviously some of it is genetics with all of us, and I think a lot of it is lifestyle.

'You know, I kind of keep most things in moderation. I think a lot of it is just not putting ourselves under so much pressure in terms of aging.'

The actress added that she focuses on 'eating right,' and 'appreciating' her body, and added that she maintains a healthy balance that isn't strict.

She shared: 'I think when you finally just kind of go, "I'm going to eat the croissant and have the coffee, and I'm going to enjoy my life and I'm not going to worry about it so much" - it helps a lot.'