Kidman and Furness Unite as First Wives Club

has been bonding with fellow actress Deborra–Lee Furness, as the two long–time friends quietly lean on each other through the aftermath of their very public marriage breakdowns.

When Nicole Kidman's marriage to started to crumble last year, she leaned heavily on her 'ride–or–die' friendships to help her through the darkest of times – and she wants to make sure Deborra, 70, has the same support network.

'Nicole's loyalty has to be with Deb as she's been a shoulder for her many times throughout the past three years,' an insider tells this week's Woman's Day magazine.

'The long–time friends have formed their own first wives club,' according to the publication. 

The pair have been close friends for forty years and have bonded over their recent heartbreak – first when Deb confirmed her split from Hugh Jackman Keith Urban parted ways.

It was at the earlier this month – where , reportedly leaving Deb 'shattered' – that Nicole, 58, once again made her loyalties clear by distancing herself from the pair. 

Despite playing 's love interest in the 2008 movie Australia and having a long friendship with him, Nicole has made it clear that she is loyal to Deb.

'Nicole is firmly Team Deb,' an insider told Naughty But Nice's Rob Shuter. 

'She believes Deb was deeply hurt by how everything unfolded. Nicole isn't interested in pretending otherwise just because Hugh showed up with a new woman on his arm.'

Nicole is now said to be helping Deborra-Lee embrace life to the fullest and is supporting her every step of the way. 

The To Die For star's cutting-edge sense of style and effortless confidence has cemented her post–divorce glow-up – and she would undoubtedly make the ultimate wingwoman for Deb at exclusive events.

The Babygirl star is even hoping that some of her newly single confidence might rub off on Deb, according to the insider.

'There's no doubt Nicole took complete control of her divorce and came out of it triumphantly,' the source said.

'She can't bear to see her dear friend suffer any more than she has to. She's doing everything she can to get Deb back in charge.'

That guidance might even extend to a touch of informal matchmaking for Deb. 

Nicole  with Simon Baker on the red carpet – is said to be exactly the kind of loyal, steady presence that Deborra needs as she edges back into the dating world.