ivanka trump hillary clinton friendship serfaty dnt erin_00020909.jpg
ivanka trump hillary clinton friendship serfaty dnt erin_00020909.jpg
PHOTO: Getty Images
Now playing
02:12
The curious case of Ivanka Trump and Chelsea Clinton
PHOTO: TV3
Now playing
01:01
Clinton: Children treated as political pawns
AUSTIN, TX - NOVEMBER 17:  Former U.S. Secretary of State Hillary Rodham Clinton signs copies of her new book
AUSTIN, TX - NOVEMBER 17: Former U.S. Secretary of State Hillary Rodham Clinton signs copies of her new book 'What Happened' at BookPeople on November 17, 2017 in Austin, Texas. (Photo by Rick Kern/WireImage)
PHOTO: Rick Kern/WireImage/WireImage
Now playing
01:01
Hillary Clinton: That is an outright lie
Bill Clinton CBS Sunay Morning
Bill Clinton CBS Sunay Morning
PHOTO: cbs
Now playing
01:32
Bill Clinton reflects on Trump media coverage
President Donald Trump speaks at a rally at the Gaylord Opryland Resort and Convention Center, Tuesday, May 29, 2018, in Nashville, Tenn. (AP Photo/Andrew Harnik)
President Donald Trump speaks at a rally at the Gaylord Opryland Resort and Convention Center, Tuesday, May 29, 2018, in Nashville, Tenn. (AP Photo/Andrew Harnik)
PHOTO: Andrew Harnik/AP
Now playing
01:06
Trump: I drew in bigger crowds than Jay-Z
PHOTO: Getty Images
Now playing
01:34
Chelsea Clinton slams Ivanka over Trump support
PHOTO: CNNI
Now playing
01:39
Hillary Clinton trolls Trump with Russian hat
AUSTIN, TX - NOVEMBER 17:  Former U.S. Secretary of State Hillary Rodham Clinton signs copies of her new book
AUSTIN, TX - NOVEMBER 17: Former U.S. Secretary of State Hillary Rodham Clinton signs copies of her new book 'What Happened' at BookPeople on November 17, 2017 in Austin, Texas. (Photo by Rick Kern/WireImage)
PHOTO: Rick Kern/WireImage/WireImage
Now playing
01:29
Clinton: Trump parrots what Putin says
US Democratic presidential candidate Hillary Clinton makes a concession speech after being defeated by Republican President-elect Donald Trump, as former President Bill Clinton looks on in New York on November 9, 2016. / AFP / JEWEL SAMAD        (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
US Democratic presidential candidate Hillary Clinton makes a concession speech after being defeated by Republican President-elect Donald Trump, as former President Bill Clinton looks on in New York on November 9, 2016. / AFP / JEWEL SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
PHOTO: JEWEL SAMAD/AFP/Getty Images
Now playing
02:01
Clinton: What went right, wrong in 2016
ST LOUIS, MO - OCTOBER 09:  Democratic presidential nominee former Secretary of State Hillary Clinton (R) speaks as Republican presidential nominee Donald Trump looks on during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election.  (Photo by Rick Wilking-Pool/Getty Images)
ST LOUIS, MO - OCTOBER 09: Democratic presidential nominee former Secretary of State Hillary Clinton (R) speaks as Republican presidential nominee Donald Trump looks on during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election. (Photo by Rick Wilking-Pool/Getty Images)
PHOTO: Pool/Getty Images
Now playing
02:07
Clinton: I was thinking 'back up, you creep'
Podesta talks Trump and Clinton_00055625.jpg
Podesta talks Trump and Clinton_00055625.jpg
Now playing
07:09
Podesta: Clinton is under Trump's skin
PHOTO: Comedy Central
Now playing
01:05
Trevor Noah on the benefit of Trump's tweets
PHOTO: Drew Angerer/Chip Somodevilla/Getty Images
Now playing
02:59
Clinton and Trump aides clash
Republican presidential candidate Donald Trump speaks before introducing his newly selected vice presidential running mate Mike Pence, governor of Indiana, during an event at the Hilton Midtown Hotel, July 16, 2016 in New York City.
Republican presidential candidate Donald Trump speaks before introducing his newly selected vice presidential running mate Mike Pence, governor of Indiana, during an event at the Hilton Midtown Hotel, July 16, 2016 in New York City.
PHOTO: Drew Angerer/Getty Images
Now playing
02:52
Push back on Trump's voter fraud allegations
MANCHESTER, NH - APRIL 12: Donald Trump speaks at the Freedom Summit at The Executive Court Banquet Facility April 12, 2014 in Manchester, New Hampshire. The Freedom Summit held its inaugural event where national conservative leaders bring together grassroots activists on the eve of tax day. Photo by Darren McCollester/Getty Images)
MANCHESTER, NH - APRIL 12: Donald Trump speaks at the Freedom Summit at The Executive Court Banquet Facility April 12, 2014 in Manchester, New Hampshire. The Freedom Summit held its inaugural event where national conservative leaders bring together grassroots activists on the eve of tax day. Photo by Darren McCollester/Getty Images)
PHOTO: Darren McCollester/Getty Images/FILE
Now playing
01:38
Trump tweets slam Clinton over recount
US Democratic presidential candidate Hillary Clinton (R) and US Republican presidential candidate Donald Trump shake hands at the end of the second presidential debate at Washington University in St. Louis, Missouri, on October 9, 2016. / AFP / Robyn Beck        (Photo credit should read ROBYN BECK/AFP/Getty Images)
US Democratic presidential candidate Hillary Clinton (R) and US Republican presidential candidate Donald Trump shake hands at the end of the second presidential debate at Washington University in St. Louis, Missouri, on October 9, 2016. / AFP / Robyn Beck (Photo credit should read ROBYN BECK/AFP/Getty Images)
PHOTO: ROBYN BECK/AFP/Getty Images
Now playing
06:14
Duffy: I'm with Trump - don't go after Clinton

Story highlights

Each woman grew up under the glare of the spotlight

Now their parents are taking aim at each other in the presidential race

(CNN) —  

It’s an unlikely friendship: Ivanka Trump and Chelsea Clinton.

Their parents, both frontrunners for their respective party’s presidential nomination, spend a lot of time on the campaign trail slinging insults at each other.

“I think the guy went way overboard – offensive, outrageous, pick your adjective,” Hillary Clinton has said of Donald Trump.

The criticism flows equally from Trump.

“She is the worst secretary of state in history,” Trump has said of Clinton.

But for the next generation of Trumps and Clintons, things are a little different.

RELATED: Donald Trump supports the Keystone pipeline

Ivanka and Chelsea have developed a close, private friendship over the years – a relationship that will likely be tested as their parents make their way through the primary season and into even hotter waters if they face off against each other in the general election.

The two women are both in their thirties – Clinton, 35, and Trump, 33. They are both new moms and live in Manhattan.

But beyond surface level similarities, their connection likely goes deeper, steeped in the commonalities of their unconventional upbringings. Chelsea grew up in the most famous of houses, at 1600 Pennsylvania Avenue as the nation’s first daughter; Ivanka grew up among New York’s elite, the daughter of a powerful and wealthy real estate mogul.

Their career paths, although vastly different in direction, also have echoes of familiarity.

They each have a big role in their respective family businesses, though they each have also worked on their own separate projects and jobs over the years. Ivanka has appeared on NBC’s “The Apprentice” and is also a top executive at the Trump Organization. Similarly, after a stint as a consultant at McKinsey & Co., Chelsea now has prominent role at the Clinton Foundation and Clinton Global Initiative.

But it may be their choice in a spouse that has linked the two most powerfully.

“They have been out together, they have been on a double-date with their husbands,” Emily Heil, co-author of The Washington Post’s Reliable Source column said. “There’s so much that they understand about each other. If there’s anyone who understands what Chelsea Clinton has been through it is Ivanka Trump.”

Both women also married men of the Jewish faith, with Ivanka converting to Judaism.

On social media they both seem to be president of the other’s fan club – tweeting at each other and posting praise on Facebook.

Earlier this year, Ivanka tweeted a quote of Chelsea Clinton, adding the hashtag “wise words.”

Chelsea told “Vogue” magazine that there’s nothing “skin deep” about Ivanka, that she is always aware of everyone else around her.

“It’s an awareness that in some ways reminds me of my Dad, and his ability to increase the joy of the room,” Chelsea said.

But the ties that bind them could also become their friendship’s Kryptonite.

Both have been known to be fiercely loyal to their families – and big boosters of each of their parent’s presidential bids.

“I can tell you, there is no better person than my father to have in your corner when you’re facing tough opponents or making hard decisions,” Ivanka said when introducing her father as he formally announced his candidacy for president. “He is battle-tested.”

How big a role each of them play on the campaign trail is still unclear.

But both Ivanka and Chelsea are seen as having real potential to help boost the image – to humanize and soften – each of their parents.

That’s something polls show both Hillary Clinton and Donald Trump struggle with as candidates.