Kate Beckinsale playfully gropes her pal before showing off her

Kate Beckinsale playfully gropes her pal before showing off her moves in a low-cut dress

Kate Beckinsale playfully gropes her pal before showing off her moves in a plunging dress after winning Best Actress at the National Film Awards

She walked away with the gong for Best Actress after attending the National Film Awards in London on Monday.

No wonder Kate Beckinsale was in a party mood as she strutted around Trafalgar Square alongside her costume designer pal Gabs Morpeth.

The 48-year-old actress cheekily grabbed her friend in one of the snaps while opening her mouth in a hilarious pose.

Oh I say!  Kate Beckinsale was in a party mood as she strutted around Trafalgar Square in London on Monday while cheekily groping her pal Gabs Morpeth, the costume designer

Oh I say! Kate Beckinsale was in a party mood as she strutted around Trafalgar Square in London on Monday while cheekily groping her pal Gabs Morpeth, the costume designer

Kate also shared a clip of the couple sitting in the back seat of their car as they drove to the awards in the capital.

Gab seemed unimpressed while smiling for the camera as her movie star pal struck the cheeky pose.

In any case, the Hollywood star was in a good mood when she and Gabs happily waltzed together in front of the fountain.

May I ask for this dance?  The 48-year-old actress also showed off her moves as she and Gabs danced in front of the fountains

May I ask for this dance? The 48-year-old actress also showed off her moves as she and Gabs danced in front of the fountains

Let's go!  Kate also shared a clip of the couple sitting in the back seat of their car as they drove to the awards in the capital

Let’s go! Kate also shared a clip of the couple sitting in the back seat of their car as they drove to the awards in the capital

The duo twirled and flipped each other around before jokingly pretending to jump into the water behind them.

While Kate looked sensational in silver, her pal pulled out the stops in a chic navy blue dress.

The Underworld star captioned her hilarious post: “London baby.”

It comes as Kate looked gorgeous as she walked the red carpet earlier at the National Film Awards.

Celebrations: Kate previously walked away with the gong for best actress after attending the National Film Awards

Celebrations: Kate previously walked away with the gong for best actress after attending the National Film Awards

Just kidding!  The duo twirled and flipped each other around before jokingly pretending to jump into the water behind them

Just kidding! The duo twirled and flipped each other around before jokingly pretending to jump into the water behind them

The actress caused a stir in a plunging silver dress as she picked up the Best Actress award for her role in Jolt.

The sequined ensemble also featured oversized shoulder pads and a thigh-high slit that showcased the star’s incredible figure.

The National Film Awards UK are presented annually by the National Film Academy and honor both in front of and behind the camera.

Kate carried the color story into her accessories when she opted for a silver baroque clutch and wore diamonds in her ears.

Winner!  It comes as Kate looked gorgeous as she walked the red carpet earlier at the National Film Awards

Winner! It comes as Kate looked gorgeous as she walked the red carpet earlier at the National Film Awards

Gorgeous: She posed up a storm in a plunging silver gown as she won the Best Actress award for her role in Jolt.

Gorgeous: She posed up a storm in a plunging silver gown as she won the Best Actress award for her role in Jolt.

Sparkles: Kate carried the color story into her accessories when she opted for a silver baroque clutch and wore diamonds in her ears Golden girl: The star slipped on gold platform shoes and opted for a dewy makeup look as she pulled her hair back into a chic chignon

Sparkles: Kate carried the color story into her accessories when she opted for a silver baroque clutch and wore diamonds in her ears. The star slipped on gold platform shoes and opted for a dewy makeup look as she pulled her hair back in a chic chignon.

The star slipped on gold platform shoes and opted for a dewy makeup look as she pulled her hair back in a chic chignon.

Kate flashed a freshly painted mulberry manicure as she proudly held her award for all to see at the event at Porchester Hall.

The action comedy Jolt, in which Kate played a bouncer with anger management issues, is enraged and upset after the murder of a friend.

The film also starred Susan Sarandon, Stanley Tucci and Bobby Cannavale.

Honour: The National Film Awards UK are presented annually by the National Film Academy and honor in front of and behind the camera

Honour: The National Film Awards UK are presented annually by the National Film Academy and honor in front of and behind the camera

Proud: Kate flashed a freshly painted mulberry manicure as she proudly held her award for all to see at the event at Porchester Hall

Proud: Kate flashed a freshly painted mulberry manicure as she proudly held her award for all to see at the event at Porchester Hall

Actor: In the action comedy, Kate played a bouncer with an anger management problem who becomes angry and upset after the murder of a friend

Actor: In the action comedy, Kate played a bouncer with an anger management problem who becomes angry and upset after the murder of a friend