Joan Collins proudly supports her son at the launch of his new book

Joan Collins was the proud mother of all when she supported her son Alexander Newley on Thursday at the launch of his book Divining The Human: The Art Of Alexander Newley.

The actress, 90, was accompanied by her husband Percy Gibson as she arrived for the event at The Polish Hearth Club in London.

Showing off her chic sense of style, Joan opted for a sophisticated white trouser suit as she proudly posed with her son at the event.

Her look consisted of a satin white blazer and matching trousers, paired with nude heels.

Meanwhile, her husband Percy opted for a smart gray suit when he joined the Dynasty star at the launch.

Happy: Joan Collins was the proud mother as she supported her son Alexander Newley in the launch of his book Divining The Human: The Art Of Alexander Newley

Family: The actress proudly hugged her son as she arrived for the launch at The Polish Hearth Club in London on Thursday

Family: The actress proudly hugged her son as she arrived for the launch at The Polish Hearth Club in London on Thursday

Sweet!  Showing off her chic sense of style, Joan opted for a sophisticated white trouser suit as she proudly posed with her son at the event

Sweet! Showing off her chic sense of style, Joan opted for a sophisticated white trouser suit as she proudly posed with her son at the event

Alexander’s book is a showcase of the worlds of portraiture, landscapes, the nude, abstraction and still life, with a series of pieces filling the glossy pages.

Joan shares Alexander and her daughter Tara with her second husband, Anthony Newley, whom she married in 1963, before divorcing in 1971.

She married her third husband, Ron Kass, in 1972 and they have a daughter together.

Elsewhere, Lady Victoria Hervey also looked the epitome of glamorous on Thursday as she attended the launch.

The English socialite, 46, exuded dramatic chic as she sparkled in a plunging black jumpsuit with tassels.

The stunning number featured a very sassy low neck and billowy material that showed off her incredibly long and sculpted legs.

The former model looked fabulous as she showed off her slim physique as she shined at the event.

Victoria paired her look with a glamorous black Chanel bag that she carried alongside her.

Glam: Her look consisted of a satin white blazer and matching pants, paired with nude heels

Glam: Her look consisted of a satin white blazer and matching pants, paired with nude heels

Family: Joan shares Alexander and her daughter Tara with her second husband, Anthony Newley, whom she married in 1963, before divorcing in 1971

Family: Joan shares Alexander and her daughter Tara with her second husband, Anthony Newley, whom she married in 1963, before divorcing in 1971

Suave: She was accompanied by her husband Percy Gibson, who opted for a nice gray pantsuit

Suave: She was accompanied by her husband Percy Gibson, who opted for a nice gray pantsuit

Sweet: The couple, who married in 2002, looked happier than ever as they posed for snaps

Sweet: The couple, who married in 2002, looked happier than ever as they posed for snaps

Gorgeous: Elsewhere, Lady Victoria Hervey looked glamorous as she attended the launch

Gorgeous: Elsewhere, Lady Victoria Hervey looked glamorous as she attended the launch

Classy: The English socialite exuded dramatic chic as she sparkled in a plunging black jumpsuit with tassels

Classy: The English socialite exuded dramatic chic as she sparkled in a plunging black jumpsuit with tassels

Beautiful: Victoria paired her look rocking a glamorous black Chanel bag that she carried alongside her

Beautiful: Victoria paired her look rocking a glamorous black Chanel bag that she carried alongside her

Glitzy: The English aristocrat accessorized her stunning look with a simple black necklace and towered her figure with a pair of black toe-tipped heels

Glitzy: The English aristocrat accessorized her stunning look with a simple black necklace and towered her figure with a pair of black toe-tipped heels

Sharp: Veteran actor Sir Derek Jacobi was dressed in a suit and boots for the occasion

Sharp: Veteran actor Sir Derek Jacobi was dressed in a suit and boots for the occasion

The English aristocrat accessorized her stunning look with a simple black necklace and towered over her figure with a pair of black toe-tipped heels.

Percy, Joan’s surviving husband, is more than 30 years her junior, a gap she dismisses in interviews with the line, “If he dies, he dies.”

The long-standing couple celebrated their 20th wedding anniversary last year with a star-studded party at Claridge’s.

Originally from Peru, Percy is a well-known Hollywood producer, best known for producing Who Wants to be a Millionaire.

Joan, meanwhile, has a career that spans more than 50 films, dozens of West End and Broadway appearances, including her own one-woman show, and a star on the Hollywood Walk of Fame.

Percy, who is 31 years younger than Joan, is her fifth husband, after marriages to Maxwell Reed, Anthony Newley, Ron Kass and Peter Holm.

The actress shares two children, Tara and Alexander Newley, with second husband Anthony – in addition to daughter Katyana Kass with Ron.