How fe-dorable! Nicole Scherzinger and Lewis Hamilton sport matching hats... as he admits 'feeling pressure' to wed the star

They've become each other's biggest cheerleaders while their careers go sky high in recent weeks.

And now Lewis Hamilton has admitted that he feels pressure to wed girlfriend of seven years Nicole Scherzinger while they balance their individual work commitments.

The Formula 1 driver was seen accompanying his brunette beauty out of London's Palladium Theatre after an evening performance of Cats on Saturday  - where she is in the starring role - and even sported a matching fedora hat.  

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Couples who dress together: Lewis Hamilton accompanies Nicole Scherzinger out of London's Palladium Theatre on Saturday, wearing a matching fedora

Couples who dress together: Lewis Hamilton accompanies Nicole Scherzinger out of London's Palladium Theatre on Saturday, wearing a matching fedora

After being on and off for nearly a decade, Lewis recently won the World Championship in Abu Dhabi will Nicole received a rave reviews for West End debut as Grizabella on Wednesday.

So between their heavy work loads, Lewis is feeling mounting pressure to propose to the US singer, he admits. 

Lewis told E! News on Saturday: 'I'm certainly feeling pressure, heat from family members. But Nicole's massively focused on her work the same as I am. We're happy just way we are.'

Cute duo: Nicole was supported by her doting boyfriend after finishing her first week in Cats: The Musical

Cute duo: Nicole was supported by her doting boyfriend after finishing her first week in Cats: The Musical

Close: Nicole and Lewis held hands as they left the theatre, not wanting to be apart for a moment

Close: Nicole and Lewis held hands as they left the theatre, not wanting to be apart for a moment

In their seven-year relationship, Lewis and Nicole reportedly split twice in 2010, once in 2011, again in 2012 and 2013 - some of which was blamed on their conflicting schedules - before finally reconciling in March this year.

Marriage at 'one point…will be for us,' Lewis added, even though he hinted that a ring wouldn't be one of this year's Christmas gifts explaining that the pair were keeping the presents low-key this year.

He continued: 'We did discuss that this Christmas we'd do something fun, such as having a set fee—$10 each—and you gotta go and buy as many or as little cool things, fun things, silly stuff. So maybe we'll do that. We don't need anything else. We got everything we've ever wanted. ' 

All smiles: Nicole's leading role in Andrew Lloyd Webber's musical has been met with critical acclaim

All smiles: Nicole's leading role in Andrew Lloyd Webber's musical has been met with critical acclaim

Busy bee: Nicole will perform in the West End show until February 2015, while Lewis jets off on holiday this Christmas

Busy bee: Nicole will perform in the West End show until February 2015, while Lewis jets off on holiday this Christmas

Lewis tweeted: 'Saw Cats musical last night, @NicoleScherzy blew me away! An incredible talent, as well as the rest of the cast!' 

Nicole will act in Andrew Lloyd Webber's musical until February this year, while Lewis takes a break from work to go skiing with family.

The former Pussycat Doll made her permanent move to the UK from Los Angeles in November, while he lives permanently in Monaco. 

Stronger than ever: Lewis this week admitted that he is feeling pressure to wed his girlfriend of seven years

Stronger than ever: Lewis this week admitted that he is feeling pressure to wed his girlfriend of seven years

Right there: The pair have consistently acted in support of each other in recent weeks with Lewis' F1 victory and Nicole's West End success

Right there: The pair have consistently acted in support of each other in recent weeks with Lewis' F1 victory and Nicole's West End success