Duchess Kate's second pregnancy: Every single style moment

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Kate Middleton maternity style royal baby 2

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Duchess Kate's second pregnancy: Every single style moment

William and Kate visited the Stephen Lawrence Centre on March 27, 2015, as Kate's final engagement before taking maternity leave.

The Duchess was glowing in her bright pink Mulberry coat.

Kate's hair looked seriously perfect -- thanks, pregnancy hormones! (And a great hairdresser...)

Kate pats William on the back as they arrive in South London.

Kate visited the Brookhill Children's Centre in Woolwich to find out about the work of Home Start on March 18, 2015.

Kate wore a black and white polka-dotted dress from ASOS, which obviously sold out within minutes of her wearing it!

Kate chatted with families who benefit from the organization Home Start.

Duchess Kate attends the St Patrick's Day Parade at Mons Barracks on March 17, 2015.

Kate laughs as she and William pose with officers and soldiers on St. Patrick's Day.

Kate smiles, holding a pretty green and white bouquet of flowers.

Prince William and Duchess Kate attended a Service of Commemoration for troops who were stationed in Afghanistan on March 13, 2015.

The royal family arrives for the service.

A cute photo of Kate holding her belly -- was royal baby #2 kicking? She was also wearing a new pendant and earrings, sapphires and diamonds by G. Collins & Sons.

Kate opted for a navy coat by Beulah London, with matching navy accessories.

Sophie, Countess of Wessex, Prince Edward, Earl of Wessex, Prince Andrew, Duke of York, Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge chat as they leave St Paul's Cathedral.

Kate received flowers from actor Zac Barker (who plays Master George) on the set of British television series Downton Abbey.

For her visit to Downton Abbey's Ealing Studios, Kate chatted with British screenwriter Julian Fellowes and other members of the cast, wearing a pretty cream coat by Jojo Maman Bebe.

Kate poses with Lady Mary (aka Michelle Dockery) and her "son" George -- who is holding a present for Prince George!

Kate got to watch live filming of a scene during an official visit to the set of Downton Abbey.

The Duchess wore this dalmatian print Hobbs coat that we'd previously seen during her first pregnancy.

Duchess Kate waves to members of the public as she leaves the Turner Contemporary Art Gallery.

Pairing the look with pretty pearl drop earrings, Kate was glowing.

Kate visited the Turner Contemporary Art Gallery on March 11, 2015 in Margate.

This woman has mastered the perfect ponytail!

Kate talked with art students at the Turner Contemporary gallery.

The Duchess attends the Observance for Commonwealth Day Service At Westminster Abbey on March 9, 2015.

A closer look at Duchess Kate's fascinator for the Commonwealth Service, a new piece by milliner Jane Taylor.

Kate wore her Alexander McQueen coat (which we saw last during her pregnancy with Prince George) and matching Prada accessories.

Kate greeted Prince Charles during the service.

Kate visited the Emma Bridgewater Factory on February 18, 2015.

The Duchess wore a blue MaxMara coat and her sapphire and diamond drop earrings.

Kate receives flowers from a young girl during her visit to the Emma Bridgewater pottery factory.

Kate gets an adorable high five at the Cape Hill Children's Centre later that day.

Kate was wearing her floral Seraphine maternity dress.

The Duchess visited the home of Ben Ainslie Racing (BAR) in Portsmouth Old Town on February 12, 2015.

Kate smiles as she paints a mural as part of a community art project for the 1851 Trust.

The Duchess wore a white MaxMara coat for the occasion.

When she stepped inside the Ben Ainslie Racing new headquarters and visitor centre at the Spinnaker Tower, Kate took off her coat and showed off her adorable sailboat-patterned Somerset by Alice Temperley dress.

Kate attended an event at Family Friends in Kensington on January 19, 2015, wearing Seraphine.

Kate was absolutely glowing in the pale blue coat.

Kate had a bouquet of flowers as she left the Kensington Leisure Centre.

Kate wore her floral Seraphine maternity dress as she met 2-year-old Ryan who presented her with flowers (but was VERY shy about it!).

The Duchess attended an event hosted by The Fostering Network to celebrate the work of foster carers in providing support to vulnerable young people on January 16, 2015.

She wore a brown Hobbs shirtdress, with a subtle pattern on it.

Kate visited Barlby Primary School on January 15, 2015 to see the Clore Art Room, in support of 'The Art Room' charity.

The Duchess wore a coat by British maternity label Madderson London.

Kate beams as she meets children outside during a walkabout.

Kate and William arrive for Church on Christmas morning.

The Duchess wore a hat by Lock & Co.

She bundled up her growing baby bump in a brown tweed Moloh coat.

Kate and William smiled at the holiday well-wishers in Sandringham.

After the service, Kate joined the rest of the royal family on a walkabout.

The Duchess was dressed down to attend a meeting of the newly established 23rd Poplar Beaver Scout Colony on December 16, 2014.

Wearing a casual hoodie and jeans, Kate helped a blindfolded boy ice a cake as she promotes disability awareness with the Scouts.

Kate took a try being blindfolded, too!

William and Kate got all dolled up to go to the Metropolitan Museum of Art for the St. Andrews 600th Anniversary Dinner on December 9, 2014.

Kate chatted with guests at the Metropolitan Museum of Art.

The Duchess wore one of her favorite gowns, a deep teal flowing dress by Jenny Packham.

Paired with an impressive pair of diamond and emerald earrings, Kate was dazzling at the event.

On the evening of December 9th, Kate and William attended the Creativity is GREAT reception in New York City.

Kate wore a black maternity dress from Seraphine and a Cartier necklace.

She chatted with J.Crew's creative director, Jenna Lyons.

Kate wore a bright pink Mulberry coat.

On December 9th, Prince William and Duchess Kate went on a tour of the National September 11 Memorial & Museum.

Kate had her hair pulled back in a high pony tail, a perfect hairstyle for a rainy day.

The Royals looked at the reflecting pools as part of the World Trade Memorial.

The Duchess wore a tweed Tory Burch coat and her hair down in waves.

Kate and William attended an NBA basketball game at Barclays Center on December 8, 2014.

Kate paired the coat with skinny jeans from J.Crew.

After the game, the royal couple met Lebron James, and received two basketball jerseys - one for Prince George!

Kate wore her hair half-up and a black military style coat by Goat Fashion.

It's believed the Duchess had the coat lengthened to her preference. She also wore all black accessories.

Duchess Kate met the First Lady of New York City, Chirlane McCray at Northside Center for Child Development on December 8, 2014 in New York City.

Later, Kate received a bouquet of flowers from a sweet little girl in out front of the center.

Kate was really taking to the classic "New Yorker style," wearing all black.

The Duchess helped wrap Christmas presents during her visit to the Northside Center for Child Development in Harlem.

Prince William and Duchess Kate arrive at The Carlyle Hotel, where they were to stay during their official two-day visit to the United States on December 7, 2014.

The Duchess accessorized with a black dress, black boots, tights and gloves for the chilly December weather.

Kate wore a shimmering plum coat by maternity label Seraphine.

Kate visited an EACH (East Anglia Children's Hospice) appeal launch event at Norfolk Showground on November 25, 2014.

Kate wore a vibrant red shift dress by Katherine Hooker.

The roomy shift dress was perfect to allow for a growing baby bump.

Duchess Kate attended the Place2be Wellbeing in Schools Award at Kensington Palace on November 19, 2014.

Wearing a polka-dotted Hobbs top and Jenny Packham skirt, Kate showed off her tiny baby bump.

Both the skirt and top were sold out almost immediately after Kate wore them.

The Duke and Duchess of Cambridge arrive for the Royal Variety Performance on November 13, 2014.

Kate wore her hair pulled back in a chignon, better to show off her sparkly drop earrings!

The Duchess looked lovely in a black lace Diane von Furstenberg gown.

The Duke and Duchess were in for an evening of performances from some of Britain's best talent.

Kate visits a SportsAid athlete workshop on November 12, 2014.

Wearing a plum dress by Hobbs, the Duchess took part in a cognitive testing exercise.

She met Olympic-hopefuls who were training to possibly join Team Great Britain.

Kate wore a black flat boots with her dress, and carried a simple black clutch.

The Duchess in Alexander McQueen for Remembrance Sunday on November 10, 2014.

Kate and William visited Wales on November 8, 2014.

The Duchess is wearing a baby blue Matthew Williamson coat and her favorite Aquatalia boots.

The baby blue coat is still available (in a few sizes!).

The royals pose with employees of a Refinery in Wales.

Kate's bump is starting to peek out!

Kate attends the Action on Addiction Autum Gala in London on October 23, 2014, wearing a black Temperley London dress.

The Duchess wore her black pumps and carried a sparkly black clutch to complete her look.

The dress is a bit edgier than she typically chooses, but we loved it.

Just the tiniest hint of a bump! Kate is now 14 weeks pregnant.

The royal mom-to-be (round 2!) was glowing as she left the venue.

Kate, wearing a pale blue bespoke gown by Jenny Packham, arrives at the Natural History Museum on October 21, 2014.

The Duchess is the royal Patron of the Museum.

Kate dazzled on her first day back to royal duties since announcing her pregnancy.

The Duchess looked stunning in her floor length Jenny Packham gown.

She wore her hair down in bouncy curls with a delicate sparkly necklace.

Kate leaves the Natural History Museum.

The Duchess heads outside to present the awards of the evening.

Kate presents the Young Wildlife Photographer of the Year award to Carlos Perez Naval at the Natural History Museum.

Kate presents the Wildlife Photographer of the Year award to Michael Nichols at the Natural History Museum.

Kate leaves the Natural History Museum.

Prince William and Duchess Kate are seen as they welcome the President of Singapore Tony Tan Keng Yam at the Royal Garden Hotel on the morning of October 21, 2014. Kate is wearing a coat by Alexander McQueen and Jane Taylor hat.

Kate's hair is pulled back in a low ponytail under her Jane Taylor hat. You can see the detail of the checked pattern of her Alexander McQueen coat.

The Duchess of Cambridge and Mary Tan depart the Royal Garden Hotel.

Kate smiles during the Horse Guards parade.

The duo prepare to meet the President of Singapore.

William and Kate laugh together during the Horse Guards Parade.

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The Duchess of Cambridge, formerly known as Kate Middleton, has been a style icon since she stepped into the spotlight as Prince William's fiancee. Agreeing to marry into Britain's most famous family is a serious commitment, and Kate had to know she'd be thrust into the spotlight. Luckily for us, as well as her passion for the good work the royal family is able to do, she also has a really great sense of style!

Kate's first pregnancy in 2013 caused a media frenzy each time she stepped out. As her baby bump grew, it became more and more exciting to see what she'd wear next, and she had sartorial win after win all pregnancy long. As Kate enters her second pregnancy, we can only imagine she'll knock it out of the park yet again.

Click through the gallery above to see how the Duchess has added her royal spin on dressing a baby bump!