Twitter tributes have poured in thick and fast for the late Dynasty and Doctor Who actress Kate O'Mara, who has died at the age of 74.
Her agent Phil Belfield said that she had passed away at a nursing home in Sussex after suffering from a short illness.
The star was best known for her role as the calculating Cassandra "Caress" Morrell, the sister of Joan Collins’ character Alexis Colby, on American primetime soap Dynasty.
Collins’ lead the tributes on the social media site, saying: “Tragic news about Kate O Mara , we had great fun on Dynasty when she played my sister Caress who Alexis insisted on calling CASSIE ! RIP”
Kate O'Mara life and career in pictures
Kate O'Mara life and career in pictures
1/9 Life & career in pictures
Sylvester McCoy as Doctor Who, with his assistant Mel (Bonnie Langford) and enemy Rani (Kate O'Mara)
2/9 Life & career in pictures
Kate O'Mara in costume for her role as Beatrice in the Open Air Theatre production of 'Much Ado About Nothing', at Regents Park in 1981
3/9 Life & career in pictures
Kate O'Mara with her Dynasty co-stars John Forsythe and Christopher Cazenove in 1989
4/9 Life & career in pictures
Kate O'Mara starred in 'We Happy Few' play at the Gielgud Theatre, alongside Marcia Warren (Flora), Emma Darwall Smith and Juliet Stevenson (Hetty) in 2005
5/9 Life & career in pictures
Ernie Wise and Eric Morecambe with Kate O'Mara in 1976
6/9 Life & career in pictures
Kate O'Mara with her Dynasty co-stars
7/9 Life & career in pictures
Kate O'Mara in an episode of Science Fiction show 'The Adventures of Don Quick' in 1970
8/9 Life & career in pictures
Kate O'Mara back in 2012 on 'This Morning'
9/9 Life & career in pictures
Joan Collins, singer Shirley Bassey and Kate O'Mara meet Queen Elizabeth II during a Diamond Jubilee celebration of the arts at the Royal Academy of Arts in central London
O’Mara was also famous for her role as The Rani, a rebel Time Lady on Doctor Who. Her character forced the Doctor, played by Colin Baker, to regenerate into the seven incarnation of the Time Lord.
She last played the Rani in a special episode called Dimensions in Space back in 1993 and recently said that she would love to reprise the role on the show.
Baker paid homage to the actress, “Oh my goodness. Kate O'Mara is no longer with us. Sad sad news. A delightful, committed and talented lady and actress. We are the poorer”.
While Bonnie Langford, who starred as companion Mel Bush tweeted “So sad to hear that the wonderful Kate O'Mara has gone. Treasured memories xxx.”
O’Mara also won new fans after starring as Pasty’s sister Jackie on Absolutely Fabulous and ITV soap Benidorm.
Tragic news about Kate O Mara , we had great fun on Dynasty when she played my sister Caress who Alexis insisted on calling CASSIE ! RIP- Joan Collins (@joancollinsobe) March 30, 2014
Oh my goodness. Kate O'Mara is no longer with us. Sad sad news. A delightful, committed and talented lady and actress. We are the poorer- Colin Baker (@SawbonesHex) March 30, 2014
So sad to hear of the passing of the wonderful Kate O'Mara. I was lucky to work with her on Horror of Frankenstein pic.twitter.com/u3ppwhjxYL- Phil Campbell (@Filbell2) March 30, 2014
So sad to hear that the wonderful Kate O'Mara has gone. Treasured memories xxx pic.twitter.com/GP4jZX851H- Bonnie Langford (@bonnie_langford) March 30, 2014
So sorry to hear of Kate O'Mara's death. She was a terrific actress, totally devoted to the theatre. Stephen & I will miss her.- Jan Harvey (@Harvey4Jan) March 30, 2014
So saddened at the passing of Kate O'Mara. She was fabulousness personified.- Lynne M Thomas (@lynnemthomas) March 30, 2014
Kate O'Mara could deliver a line like 'Pass me another macadamia nut and tell me more about Alexis' with dignity intact. #kateo'mara- Gareth Roberts (@OldRoberts953) March 30, 2014
Kate O'Mara is no more. Only 74! I loved every encounter I had with her. Today doesn't seem so sunny.- graham norton (@grahnort) March 30, 2014
What sad news about Kate O'Mara. A class act, an old-school trouper, and a lovely lady.- Nicholas Pegg (@NicholasPegg) March 30, 2014
She is survived by her sister, the actress Belinda Carroll.
A private funeral and memorial service will be held at a later date not yet confirmed.