SURPRISE!!JENIFER LOPEZ BOYFRIEND HAD A SURPRISED 43RD BIRTHDAY EXTRAVAGANZA ON LUXURY YATCH(PHOTOS)

Figuring out how to celebrate the birthday of your significant other for the first time is a daunting task for most any couple.
So imagine if you were dating Jennifer Lopez.
Still, Casper Smart did his best to impress his leading lady tonight - blindfolding the singer and leading her to a surprise party on a luxury yacht for her 43rd birthday extravaganza.

Surprised, honey? Casper Smart revealled his birthday surprise for girlfriend Jennifer Lopez as the couple celebrated her 43rd in New York this evening

The big reveal: Casper held a colourful scarf over Jennifer's face before revealling what the fuss was all about

The couple, who were loved-up in New York earlier in the day, changed into their party clothes for a night out on the town.
Only Jennifer wasn't expecting - or at least, wasn't supposed to be expecting - the dancer had booked a boat for the occasion.

Stepping out of their hotel, the singer looked stunning in a long sleeve Tom Ford zipper dress in a striking shade of orange.
The detail, which revealed her toned back, brightened Jennifer's radiant complexion.

Stunning: The singer sizzled in a backless Tom Ford zipper dress in a striking shade of orange-red

Sexy star: Jennifer showed off her toned back as Casper led her into their car

Not forgetting her fans: Jennifer flashed a smile to photographers

The surprise: Casper had booked a yacht for the very special occasion

What gentlemen: Jennifer grabbed the shoulder of a man leading the way on board as Casper followed behind

Time to party! The star stepped on board to greet dozens of friends who came out in her honour

Thank you baby! Jennifer seemed genuinely appreciative as she spoke with her boyfriend surrounded by balloons and friends

It's her night: The singer flashed a smile as she spoke to another person on board

Dancing queen: Jennifer showed off her moves as she boogied with Casper on the deck at the party

Hilarious! Jennifer looked delighted with her huge bear birthday cake

Smiles all round: Partygoers snapped photographs of the birthday girl as she posed up with the cake

Planners were also seen carrying an oversized cake in the shape of a white teddy bear with a large pink bow on board, with a card placed in front reading: 'Happy Birthday BEAR!'
Nevertheless, Jennifer seemed jubilant as she joined friends on the ship, adorned with silver and black balloons.

Life of a VIP: Casper spent the day prepping the yacht for the birthday party, and was seen telling the event planners where to put a large photo of his cougar as a little girl

'Happy Birthday BEAR!' A giant birthday cake with the saccharine message was carried in

Earning their keep: A group of workers were seen carrying boxes of flowers aboard the ship

Earlier this afternoon, the singer seemed to be in great spirits as she headed out for lunch at Nobu hand-in-hand with Casper and a group of friends.
The former reality show judge appeared much younger than her years in a stylish white and blush full-length dress and Chanel handbag.
If her back-up dancer beau seemed a little sheepish it's no surprise - just 24 hours earlier he was pictured leaving an X-rated peepshow alone.

One for every year? A giant bag containing several balloons could be seen behind Casper

Just chilling: Casper was seen having a timeout from preparations as he left the men to work

Luxurious: The Utopia III seemed to have a lower deck, middle deck and upper seating too

Casper, who has been dating one of the world's sexiest singers for eight months, was pictured slinking into the seedy establishment attached to the NY VIP Toys sex shop yesterday afternoon.

He made a phone call outside the store before quickly dashing in for the show and was seen adjusting his jeans as he emerged some time later.
While there's some speculation he was buying his girlfriend a sexy birthday treat, he certainly wasn't carrying any shopping bags as he left.
Jennifer, meanwhile, has been ringing in her birthday in style, kicking off celebrations at ritzy A-list restaurant Cipriani last night.

Birthday smile: Jennifer Lopez and Casper Smart hold hands as they leave their New York hotel today

Full length and fabulous: The singer, who turns 43 today, wore a stylish dress for her celebration

The couple recently opened up about their romance for the first time in an interview on ABC.
Casper frankly revealed that there were no romantic sparks between the two of them initially.
When asked if it was love at first sight when the pair met, Casper said: 'I don't think it was, for either of us. It was just very natural, you know, natural how it happened.
'There was nothing before, no flirting, no nothing.'
The pair then started dating last autumn just a few months after her seven-year marriage to Marc Anthony ended in July 2011.

A-list bonding: Jessica Alba offered a hug to J Lo at the birthday celebrations

Age ain't nothing but a number: A mere 18 years separates Jennifer and Casper

While Casper insists Jennifer is good at taking direction from him, ultimately 'she's the boss'.
Jennifer, who has four-year-old twins, Max and Emme, with Marc, added: 'It can be difficult for anybody who has to stand by my side...
'But at the end of the day, I know that I deserve that (to have love).'
She also revealed she is open to marring again despite already having three divorces under her belt, saying she hasn't given up on the 'fairytale'.