There's no love lost between Democrat Hillary Clinton and Republican Donald Trump, but the bad blood doesn't extend to their offspring.
While their parents are bitter rivals in the US presidential race, their daughters Chelsea Clinton, 36, and Ivanka Trump, 34, are good friends who - until recently - attended the same social functions and have more than a few things in common.
Both have high profile parents, attended Ivy League schools, are married to Jewish men. They both lived through their fathers' sex scandals at a young age, and are now devoted to their family's work.
Chelsea and Ivanka were introduced by their husbands, investment banker Marc Mezvinsky and New York Observer owner Jared Kushner, and clicked immediately.
"Ivanka and I talk about everything," Chelsea told Entertainment Tonight in September 2015. "I'm so grateful she's my friend and I think she's a great woman and I support her as I support all my friends."
In October she told Extra she was "very good friends with Ivanka", and she didn't believe politics would be a challenge for their friendship.
"No I don't think so, it hasn't been so far and I don't think that it would be in the future because I'm friends with Ivanka for Ivanka, not for her parents or any other part of her life," Chelsea said.
"I love Ivanka and I think that friendship always trumps politics, and that's how it should be."
Former model Ivanka is now an executive at the Trump Organisation and the owner of her own clothing label, while Chelsea helps run the Clinton Foundation and is on the board of the organisation.
Both are working mothers who recently gave birth to sons. Chelsea welcomed her second child, Aiden, on June 18.
And Ivanka gave birth to Theodore, her third child, in March.
“[Ivanka and Chelsea] genuinely relate to each other and care about each other and ran in the same circles,” an associate told Politico.
Giving her appraisal of Ivanka for a Vogue profile in 2015, Chelsea gave a glowing description of her friend.
“She’s always aware of everyone around her and ensuring that everyone is enjoying the moment. 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.
“There’s nothing skin-deep about Ivanka. And I think that’s a real tribute to her because certainly anyone as gorgeous as she is could have probably gone quite far being skin-deep.”
The warm feelings go both ways. Last year Ivanka celebrated her friend's wisdom with this tweet:
Things weren't always so hostile between the two families. The Clintons attended Trump's 2006 wedding to Melania Knavs, and Ivanka donated money to Hillary Clinton's 2008 presidential bid.
In fact, Ivanka and her husband's unwavering support and campaigning for Trump has apparently come as a shock to their friends, who knew them as sworn Democrats.
"It's all anyone is talking about," a member of their social circle told the New York Magazine.
"People are totally horrified. But she doesn't seem to let it affect her at all."
So many are wondering just what Ivanka makes of her father's attacks on Chelsea's mother, which have included referencing Bill Clinton's fling with Monica Lewinsky.
But at the start of the year Chelsea and Ivanka reportedly wished each other a happy new year and agreed not to let the 2016 election ruin their friendship, according to the New York Daily News.
"Because Chelsea is more experienced in politics, she wanted to move forward. She knows not to take these things personally," the newspaper quoted a source as saying, adding that they agreed to organise a play date with their newborn babies once the election is over.