Picture perfect! Amanda Holden celebrates pal Tamzin Outhwaite's 46th birthday with a selfie as they take to the River Cam for a boat party

She's been busy performing her latest theatre show Stepping Out around the country.

But Amanda Holden enjoyed a breakaway from the stage as she celebrated her co-star and pal, Tamzin Outhwaite's 46th birthday in style, punting on the River Cam in Cambridge on Saturday.

The Britain's Got Talent judge looked in her element as she enjoyed a selfie with the birthday girl as they passed King's College wrapped up in a number of blankets.

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Selfie sisters! Amanda Holden enjoyed a breakaway from the stage as she celebrated her co-star and pal, Tamzin Outhwaite's 46th birthday in style, punting on the River Cam in Cambridge on Saturday

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Braving the freezing temperatures, the 45-year-old TV star appeared in high spirits as she donned a quilted navy SuperDry jacket with fur trim that was sure to ease the November chill while out on the water.

The mum-of-two - who is married to  sported a beige polo neck under her duvet-esque coat as she slipped on a pair of khaki denim jeans and knee-high boots for the outing. 

Leaving her golden locks loose, Amanda hid her facial features with a pair of simple gold Ray-Ban aviators as she was spotted with an occasion appropriate birthday cake.

Cutting the bake, Amanda couldn't help but giggle as they attempted to steadily separate the luxury chocolate Patisserie Valerie cake evenly. 

Cutting the chill: The 45-year-old TV star appeared in high spirits as she donned a quilted navy SuperDry jacket with fur trim that was sure to ease the November chill, while out on the water

Golden gal: Leaving her golden locks loose, Amanda hid her facial features with a pair of simple gold aviators as she was spotted an occasion appropriate birthday cake

Relaxed: Amanda worked a pair of knee-high boots for the water activities

Birthday girl: Amanda took a number of hilarious selfies of pal Tamzin with her cake

Cake time! At one point Amanda looked to do the honours of cutting the cake

Not alone in the celebrations, Amanda was joined by a number of friends, including Angela Griffin and her two kids on the water. 

Amanda was seen at one point feeding a fellow passenger a slices of cake as they were chauffeured in two punts down the river.

Wrapping up for her special day, Tamzin - who is mother to Florence, 8, and Marnie, 4 - donned a beige check duffle coat around her as she worked a fluffy trapper hat.

Warmed up! Wrapping up for her special day, Tamzin - who is mother to Florence, 8, and Marnie, 4 - donned a beige check duffle coat around her as she worked a fluffy trapper hat

Hitting the spot: The mum-of-two seemed to enjoyed the Patisserie Valerie cake

Helping hand: Amanda was seen at one point feeding a fellow passenger as slices of cake

In stitches: Amanda couldn't help but giggle while with her friends

Catching up: Amanda and Tamzin caught up with fellow passengers on the punt

Feeling calm: The pals posed for a quick pic as they took in the sights and sounds of the River Cam

Following Amanda's lead, the former Hotel Babylon actress covered her face with a pair of oversized shades as she sported a fur stole around her neck.   

Enjoying their 45-minute trip along the water, the group posed for a number of selfies and appeared joyful throughout their outing. 

Their boat trip comes as the group have been performing Stepping Out at the Cambridge Arts Theatre since Monday, with Saturday being their final night at the venue.  

Tea time! Enjoying their 45-minute trip along the water, the group appeared joyful throughout their outing as they shared plates of cake

Sweet treat: Amanda passed on a healthy portion of cake to fellow punters 

Celebrations: Not alone in the celebrations, Amanda was joined by a number of friends, including Angela Griffin and her two kids on the water

The comedy charts the lives of seven women and one man attempting to tap dance.

The cast includes Angela Griffin, former EastEnders star Tracy-Ann Oberman and Emmerdale's Nicola Stephenson. 

Amanda plays Vera in the theatre show while Tamzin has been on tour for nearly a month with the play, which is hitting the West End next year.

Boat trip! The group have been performing Stepping Out at the Cambridge Arts Theatre since Monday, with Saturday being their final night at the venue

Working the water: Amanda plays Vera in the theatre show while Tamzin has been on tour for nearly a month with the play, which is hitting the West End next year

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