Dec Donnelly seen leaving party with Alex Jones after celebrating Katherine Jenkins' birthday

Declan Donnelly was spotted exiting a restaurant in Mayfair alongside The One Show's Alex Jones after an evening of celebrations. The famous pair were among the attendees at Katherine Jenkins' star-studded birthday dinner.

Katherine, who turns 44 on 29 June, held a lavish get-together at Bacchanalia restaurant in London to mark her upcoming birthday. The opera singer invited several famous faces to the bash, including Piers Morgan and Darcey Bussell.

Dec, 48, and Alex, 47, looked all partied out as they left the restaurant in a taxi together. Alex attended the party with husband Charlie Thomson while Dec was joined by wife Ali Astall.

Declan Donnelly and Alex Jones
Declan Donnelly and Alex Jones were snapped leaving Katherine Jenkins' star-studded birthday bash -Credit:Smart Pictures

Alex looked stunning in a turquoise strapless mini dress with her brunette locks wore loose around her shoulders. Meanwhile Britain's Got Talent presenter Dec cut a casual figure in a navy blue shirt and matching trousers.

Alex paid tribute to her close friend Katherine on Instagram as they celebrated the singer's upcoming birthday. Alongside a selfie of the duo, Alex penned: "What a fun and special night! Thank you @katherinejenkinsobe and @cygnet_gin Penblwydd hapus".

Katherine posted a series of photographs from the evening on her own Instagram account. Her husband Andrew Levitas was also in attendance, as well as Piers' wife Celia and Bridgerton cast member Lorraine Ashbourne.

"Celebrating my 44th trip around the sun with people I love," Katherine captioned the post. She showed off the incredible venue, as well as the heavily embellished mini dress she modelled at the party.

Piers Morgan and Katherine Jenkins
Other celebs, such as Piers Morgan, joined the singer to celebrate -Credit:Instagram
Katherine Jenkins' birthday dinner
A personalised cocktail menu was on offer -Credit:Instagram

It's understood Katherine and her celeb pals partied at Apollo's Muse, which is a member's club located within Bacchanalia restaurant. The celebrations included a personalised drinks menu, with cocktails given names related to music. The drinks all featured Cygnet Gin - the luxury gin brand Katherine founded.

After the meal, the party began with Katherine being presented with a huge white cake covered in a floral design. Huge sparklers had been placed in the top of the cake and her pals could be seen singing to her in clips shared on social media.

Katherine Jenkins with friends at her birthday dinner
The singer looked stunning in an embellished mini dress -Credit:Instagram

Dozens of Katherine's followers flocked to wish her well under her Instagram post. Julien MacDonald said: "Looking fabulous xx Have a great birthday my love," with red heart emojis.

"Happy birthday what a fab evening you looked amazing xx," another follower said. Somebody else commented: "Happy Birthday Mrs Katherine! May you have many more!"