They were embattled in a decades-long feud over songwriting credits and reports of breaking up the Beatles.

But Paul McCartney and Yoko One have since made up and put their grievances aside.

Proving just how far their friendship has come, the Japanese performance artist even turned out to support Macca's fashion designer daughter Stella McCartney, who was being honoured at the 2014 Women's Leadership Award gala at Lincoln Center on Thursday.

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Imagine: Paul McCartney and Yoko Ono both showed up to watch his daughter Stella McCartney be honoured at the 2014 Women's Leadership Award gala at Lincoln Center on Thursday

Looking as dapper as ever, Paul, 72, arrived wearing a sleek dark suit while holding the hand of his third wife Nancy Shevell.

The 54-year-old businesswoman was equally as chic decked out in an asymmetrical navy blue gown and strappy black heels.

Meanwhile Yoko kept true to her signature look and wore a black tuxedo, but dared to bare as she showed off her cleavage with a low-cut black top underneath.

Happily married: Looking as dapper as ever, Paul, 72, arrived wearing a sleek dark suit while holding the hand of his third wife Nancy Shevell

She's like a rainbow: The 54-year-old businesswoman was equally as chic decked out in an asymmetrical navy blue gown and strappy black heels

The 81-year-old acccessorized with a black Bolero hat, matching gloves and her trademark oval sunglasses.

Paul and Yoko's budding friendship was ignited after the former Beatle made complimentary remarks about her in an interview with Rolling Stone magazine last year.

'Time, the great healer,' noted the musician as to what repaired the rift. 'I thought, If John loved her, there's got to be something. He's not stupid.'

Peace out: The 81-year-old kept true to her signature look and wore a black tuxedo, but dared to bare as she showed off her cleavage with a low-cut black top underneath

Woman of the hour: Stella McCartney was being feted for inspiring work within the fashion industry

After hearing his comments, Yoko said she was 'thankful' and added, 'He was my husband's partner and they did a great job and all that. They seemed to have a lot of fun, and I respected that.'

The duo were at odds with each other for years, mostly over songwriting credits for Beatles tunes.

The battle spilled over into the media, where they would often make pointed remarks at each other.

According to McCartney, Ono had reneged on an agreement to let his songs be credited as McCartney/Lennon rather than Lennon/McCartney.

Making beautiful music: The duo seemed in great spirits as they held hands at the Grammy Awards on January 26

The two began building bridges in 2012 when McCartney told David Frost in a televised interview that he didn't blame brunette artist for the 1970 break-up of the Beatles, a belief held by many Beatles fans.

'She certainly didn't break the group up, the group was breaking up,' said Sir Paul in the interview.

He also generously credited Ono with helping John Lennon find a new creative side, which included writing the song Imagine.

'I don't think he could have done that without Yoko, so I don't think you can blame her for anything.'