Nothing says 'I love you' like flowers - or a brand new Lamborghini, if you're Kim Kardashian.

The curvy star, who is worth an estimated £23m, splashed out on a new ride as a surprise for her rapper boyfriend Kanye West's 35th birthday on Friday.

And this was no ordinary sportscar - Kim bought a rare £405,000 Lamborghini Aventador LP 700-4, which is apparently a big deal to motor geeks and Jeremy Clarkson types.

The car, which can do 0-60 in 2.9 seconds, was delivered to Kim's house in Los Angeles and she was papped taking the sleek supercar out for a spin.

Kim couldn't hand over the keys to Kanye just yet as he's currently on tour with Jay-Z, so she filmed a video of herself posing with the car.

And according to TMZ.com, she hopped on the next flight to Ireland to show her new man the clip.

We're guessing that's one Kim Kardashian home movie Kanye will be more than happy to see!

In the mean time, flick through the gallery below to see some of Kim's best looks...

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  • Style Evolution: The Kardashians

    2006 A very trim looking Kim donned a halterneck bodycon frock for the 2006 ESPY Awards in Hollywood.

  • Style Evolution: The Kardashians

    2006 The night that style forgot: Kim Kardashian's Rock & Republic party ensemble of white boots over jeans and matching bag and belt left a lot to be desired.

  • Style Evolution: The Kardashians

    2007 Kim's patterned dress at the Maxim Hot 100 Party at the Gansevoort Hotel in New York might have been ok if it wasn't two sizes too small...

  • Style Evolution: The Kardashians

    2008 Unfortunately, Khloe and Kim slightly resembled two Christmas baubles at the MTV Australia Awards in Sydney.

  • Style Evolution: The Kardashians

    2008 Electric frock: Kourtney Kardashian showed off her enviable figure at the 2008 ESPY Awards in LA.

  • Style Evolution: The Kardashians

    2008 Kim Kardashian: Prom Queen? Nope, the lilac Bradley Bayou princess dress at the Teen Choice Awards in LA wasn't working for us.

  • Style Evolution: The Kardashians

    2008 While Khloe and Kim were sexy and cute in their LBDs at The 944 Magazine Party to celebrate the 2008 MTV Video Music Awards in LA, Kim's high-waisted tartan skirt and satin mustard top hit all the wrong notes.

  • Style Evolution: The Kardashians

    2008 Kim Kardashian pulled off the 20s look with aplomb at the Pur Jeans Halloween Bash in LA.

  • Style Evolution: The Kardashians

    2008 A strapless gold foil dress and black bra do not a good combo make. Kim suffered this minor fashion fail at the Spike TV's 2008 Video Game Awards in LA.

  • Style Evolution: The Kardashians

    2008 New Year's Eve at the Pure Nightclub in Las Vegas must have had a gold dress code. We're not sure about Kim's giraffe-print effort...

  • Style Evolution: The Kardashians

    2009 Kim opted for zebra chic to host the Three-O Vodka Bubble launch at Greenhouse in New York.

  • Style Evolution: The Kardashians

    2009 Khloe Kardashian was feelin' blue in a sexy ruched minidress at the Aces & Angels Celebrity Poker Party at The Playboy Mansion.

  • Style Evolution: The Kardashians

    2009 Dare we say Kim's dress may have looked better without the black T-shirt at the premiere of Orphan in LA?

  • Style Evolution: The Kardashians

    2009 While Khloe Kardashian rocked a printed green tulip dress at the GMC for Quick Trim in LA, Kim worked a spray-on leggings and a stud-sleeve jacket.

  • Style Evolution: The Kardashians

    2009 On paper, a bright pink leopard-print dress shouldn't works, but on Kim Kardashian at the Tracy Reese Spring 2010 fashion show in New York, it did.

  • Style Evolution: The Kardashians

    2009 For the Emmy Awards in 2009, Kim was pretty in a one-sleeved white gown by Ina Soltani, while mum-to-be Kourtney was stylish in black BCBG.

  • Style Evolution: The Kardashians

    2009 Gorgeous in grey: We love Kim Kardashian's stylish dress and bangles at the FOX Reality Channel Really Awards in LA.

  • Style Evolution: The Kardashians

    2009 While Khloe Kardashian rocked a printed green tulip dress at the GMC for Quick Trim in LA, Kim worked a spray-on leggings and a stud-sleeve jacket.

  • Style Evolution: The Kardashians

    2010 Kim oozed a Grecian goddess vibe at The Heart Truth's Red Dress Collection in 2010 in a gorgeous Marchesa number.

  • Style Evolution: The Kardashians

    2010 Kim showed off her famous curves in a snug LBD at the Comcast premiere party for Keeping Up With The Kardashians in West Hollywood.

  • Style Evolution: The Kardashians

    2010 Kim's mum Kris Jenner joined her on the red carpet at the 62nd Primetime Emmy Awards - and Kim channelled 'warrior bride' in a stunning Marchesa dress.

  • Style Evolution: The Kardashians

    2010 We think Khloe was wearing the stand-out dress as she made an appearance with Kim and Kourtney at Borders Century City to sign copies of their book Kardashian Konfidential.

  • Style Evolution: The Kardashians

    2010 The nude dress and patent heels ensemble at the Z100's Jingle Ball 2010 could be one our Kim Kardashian favourites.

  • Style Evolution: The Kardashians

    2011 Sexy sisters! Kim Kardashian Kendall Jenner, Kylie Jenner and Kourtney Kardashian strike a pose at the 24th Annual Kids' Choice Awards in Los Angeles.

  • Style Evolution: The Kardashians

    2011 Showing her support at the launch of Khloe and Lamar's fragrance, Unbreakable, in LA, Kim was stunning in a bold-shouldered top and skinny jeans.

  • Style Evolution: The Kardashians

    2011 On the prowl: Khloe and Kim take a walk on the wild side, while Kourtney is pretty girlie at the Kardashian Kollection launch party in Los Angeles.

  • Style Evolution: The Kardashians

    2011 Kourtney Kardashian showed off her pins in a lace ensemble at the Alice and Olivia Spring 2012 Presentation during Mercedes-Benz Fashion Week in New York.

  • Style Evolution: The Kardashians

    2011 Kim was head-turning wearing a teal one-shouldered Vera Wang gown at the designer's spring 2012 show in New York.

  • Style Evolution: The Kardashians

    2011 Thigh-high boots kind of stole the thunder from Kim's Belle Noel jewellery launch at Bloomingdale's in New York.

  • Style Evolution: The Kardashians

    2011 Khoe was a scarlet woman in an eye-catching red skirt, while Kim covered up in a batwing coat at the launch of their handbag collection in Sydney.

  • Style Evolution: The Kardashians

    2012 70s chic! For a shopping trip at Barneys in LA, Kim was cool in high-waisted trousers and oversized sunnies.

  • Style Evolution: The Kardashians

    2012 At the 2012 Golden Globes, Kim Kardashian showed off her hourglass figure in a head-turning Bruce Oldfield gown.