Lee Radziwill is laid to rest at invite-only funeral service

A private Requiem Mass was celebrated Monday morning for socialite and ex-princess Caroline Lee Bouvier Radziwill at St Thomas More Church on Manhattan's Upper East Side.

The four years younger sister of the late former First Lady Jacqueline Kennedy Onassis passed away on February 15 of natural causes. She was 85.

Family and friends nearly filled to capacity the 250 seat, 19th-century Gothic Revival architectural style Catholic church to remember and say their good-byes to the style icon. 

Among the mourners at the invitation-only service were Lee's only surviving child, Anna Christina (her son Anthony predeceased her in 1999); former daughter-in-law Carole Radziwill; niece Caroline Kennedy Schlossberg, her husband Edwin and their three adult children, Rose, John and Tatiana.

Caroline Kennedy and husband Edwin Schlossberg are pictured entering St Thomas More Church on Manhattan's Upper East Side Monday morning for the funeral of her aunt Lee Radziwill 

Caroline Kennedy and husband Edwin Schlossberg are pictured entering St Thomas More Church on Manhattan's Upper East Side Monday morning for the funeral of her aunt Lee Radziwill 

Real Housewives of New York star Carole Radziwill, Lee's former daughter-in-law, dressed in all black as she entered the church service 

Real Housewives of New York star Carole Radziwill, Lee's former daughter-in-law, dressed in all black as she entered the church service 

Fashion designer Marc Jacobs was spotted smoking a vape as he made his way to the church Monday morning for the service of friend Lee Radziwill, who died at her home February 15

Fashion designer Marc Jacobs was spotted smoking a vape as he made his way to the church Monday morning for the service of friend Lee Radziwill, who died at her home February 15

Fashion designer Tory Burch wore pumps and a sunglasses as she walked the New York City streets alongside husband Pierre-Yves Roussel ahead of Lee Radziwill's funeral service

Fashion designer Tory Burch wore pumps and a sunglasses as she walked the New York City streets alongside husband Pierre-Yves Roussel ahead of Lee Radziwill's funeral service

Monday's funeral service was invite-only, with about 250 of the style icon and socialites closest family and friends in attendance 

Monday's funeral service was invite-only, with about 250 of the style icon and socialites closest family and friends in attendance 

An inside look of the St Thomas More Catholic Church where flowers are in place in preparation for Monday's service 

An inside look of the St Thomas More Catholic Church where flowers are in place in preparation for Monday's service 

Lee Radziwill died in New York on February 15, of natural causes after suffering from an 'age-related disease' Pictured: Lee in 1968 

Lee Radziwill died in New York on February 15, of natural causes after suffering from an 'age-related disease' Pictured: Lee in 1968 

Also attending were Sofia Coppola, fashion designers Marc Jacobs and Carolina Herrera, her husband Renaldo; Lee's ex-boyfriend, the photographer Peter Beard, as well as Jackie's longtime companion Maurice Tempelsman.

The raspy-voiced three times divorced Radziwill outlived all of her husbands—her first, Michael Canfield, died in 1969. 

She then wed Polish aristocrat Prince Stanislas Radziwill, with whom she had her two children. He would pass on nearly two years after their 1974 divorce.

Her final try at marriage, to Herbert Ross, lasted 10 years

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