Royal style: All the best looks from March 2018

Meanwhile, Beatrice Borromeo kept it simple in black velvet Alberta Ferretti with a sculpted train. She channeled Grace Kelly at the event with her gorgeous chignon. Princess Caroline's daughter-in-law added some sparkle with diamond and ruby earrings and a single-strand diamond necklace.

Royal matriarch Princess Caroline, joined by her good friend Karl Lagerfeld, wore a pretty pink lace haute couture creation by the Chanel designer. The Princess of Hanover added a statement starfish necklace and pearl earrings to finish off the pretty spring look.

She's got pockets! Also wearing Chanel was Princess Caroline's 18-year-old daughter Princess Alexandra. The royal teen opted for a midi-length drop-waist tweed look featuring sequin embroidery and pockets.

During King Abdullah II and Queen Rania Of Jordan's official visit to the Netherlands, the Jordanian Queen and Dutch Queen Maxima were synchronized in tailored style. While Maxima wore a tan belted cape-style coat, Rania went for spring hues in a double-breasted style in Tiffany blue. The two were on a visit to the Gemeentemuseum in The Hague.

Crown Princess Victoria of Sweden attended the "A Conversation About Water" meeting hosted by WaterAid in Stockholm wearing an environmentally friendly dress. The green long-sleeved look is from H&M's Conscious Collection. 

Crown Princess Mary of Denmark kept warm in a grey flannel coat and thigh-high boots as she received a 50,000 euro check (around $62,000), on behalf of her charitable foundation, from the Danish Football Association. The exchange took place before the international friendly soccer match between Denmark and Panama in Brondby, Denmark. 

Queen Maxima of the Netherlands was cheery in yellow as she joined her mother-in-law Princess Beatrix at the official dinner for the King and Queen of Jordan at Palace Noordeinde on March 20.

The Dutch Queen wore similar hues as Queen Rania as they visited the ROC Mondriaan technical school on March 21 in The Hague. Queen Maxima wore a pale pastel ruffled dress and one of her signature hats, while Rania wore a grey jacket with coordinating bag and pumps.

Stepping out on March 22, and making her second stylish appearance of the week, the Duchess of Cambridge stunned the waiting crowd at London's Olympic Park, wearing a $850 cream coat by Goat, black high heel shoes, a simple clutch bag by Mulberry, black trousers and a $69 top by Hobbs. The pregnant royal wore her hair loose in her trademark curled style and sported a fresh glow, showing off her natural beauty with minimal makeup. Kate was joined by her husband Prince William – and their first port of call was the Copper Box which is in aid of SportsAid. The charity helps young British sportsmen and women aspire to be Britain's next Olympic, Paralympic, Commonwealth and world champions.

The day before, on Wednesday March 21, Kate looked fresh and glowing as she attended an event in central London which was held at the Royal Society of Medicine. Prince William's wife braved the cold conditions in a stunning mint green coat and nude high heel court shoes by Jimmy Choo. The Duchess – who is due to give birth in April – had her rich brunette curls coiffed to perfection and wore her makeup in a typically flawless style – she sported natural eye make-up with a smattering of pinky nude lipstick and her cheeks looked delicately flushed.

Queen Elizabeth's granddaughter Zara Tindall isn't let being pregnant cramp her style! The British royal wore some seriously trendy beige suede thigh-high boots to Ladies Day of the Cheltenham horse racing festival on March 14.

Zara Tindall kept her growing bump under wraps in a black coat at Cheltenham a day earlier, sporting a grey fedora and lending her outfit a pop of color with a red handbag.

Photo: Getty Imags

Queen Letizia looked perfectly polished wearing a tweed skirt suit by her go-to brand Hugo Boss. The monarch wore the chic separates for a Rare Diseases Day meeting at the Goya Theater.

Photo: Carlos Alvarez/Getty Images

On March 12, pregnant Duchess Kate looked elegant in a navy blue coat and dress by luxury label Beulah London as she arrived at Westminster Abbey with Prince William, Prince Harry and Harry's fiancée Meghan Markle for the Commonwealth Day service.

Photo: Getty Images

Princess Eugenie wore a Princess Diana-style tartan blazer and some funky booties at the We Day UK event held at Wembley Arena in London.

Photo: Jeff Spicer/Getty Images

Eugenie's sister Princess Beatrice of York also stepped out for We Day UK at Wembley, in a monochrome look with printed miniskirt. 

Photo: Mike Marsland/WireImage

Queen Maxima of the Netherlands also showed she's mad for plaid in a patterned pencil skirt worn with a deep burgundy velvet top. The royal was visiting the opening of the World Horti Center, the international knowledge and innovation center for greenhouse horticulture in Naaldwijk, Netherlands. 

Photo: Patrick van Katwijk/Getty Images

Sweden's future Queens, first-in-line Crown Princess Victoria and her daughter, second-in-line Princess Estelle, had a royal twinning moment in dark coats with fur collars, and cute winter boots.

Photo: Getty Images

Visiting Canada with husband King Philippe, Queen Mathilde of Belgium paid tribute to her host country's flag with a bright red cape and matching hat.

Photo: Getty Images 

Dutch Queen Maxima was perfectly coordinated in green and grey at the Expertise Center for Endometriosis in Balance at HMC Bronovo Hospital in The Hague.

Photo: Patrick van Katwijk/Getty Images

Kate Middleton braved the cold recycling her Seraphine "Marlene" dress as she stepped out on March 7 to visit Place2Be’s new headquarters in London. The Duchess first wore the navy piece during her trip to Norway. The 36-year-old paired her dress with matching Stuart Weitzman high heels and a Mulberry clutch.

Photo: Getty Images

The day before, the pregnant royal recycled a cream maternity coat by Jojo Maman Bebe as she met with the charity Family Links during a visit to Pegasus Primary School in Oxford, England. The Duchess last wore the wool blend Princess Line coat when she visited the set of Downton Abbey in March 2015 while pregnant with Princess Charlotte.

Photo: Arthur Edwards - WPA Pool/Getty Images

Queen Letizia of Spain was walking tall in her favorite red suede Magrit boots and a patterned Carolina Herrera skirt as she received the Spanish Winter Olympics Team at Madrid's Zarzuela Palace. The monarch completed her look with a simple BOSS turtleneck.

Photo: Eduardo Parra/Getty Images

Monaco royal Charlotte Casiraghi, daughter of Princess Caroline, stepped out with boyfriend Dimitri Rassan at the Cesar Film Awards in Paris. Making her red carpet debut with her real-life leading man, Grace Kelly's granddaughter looked glamorous in a long-sleeved floral mini dress and sheer black stockings. 

Photo: Stephane Cardinale - Corbis/Getty Images

Princess Caroline's younger daughter Princess Alexandra of Hanover experienced the autumn wonderland at Chanel's Paris Fashion Week show wearing a classic bouclé coat by the brand.

Photo: Bertrand Rindoff Petroff/Getty Images

Princess Alexandra's cousin, Pauline Ducruet – daughter of Princess Stephanie of Monaco – also stepped out for the Chanel Paris Fashion Week show. 

Photo: Pascal Le Segretain/Getty Images for Chanel

Queen Letizia of Spain showed us how to do rainy weather dressing in style in a wrap coat and patent leather heels for the Digitalizadas presentation held at the Reyes Catolicos Hotel in Santiago de Compostela, Spain.

Photo: Carlos R. Alvarez/WireImage

Underneath the wrap coat, Queen Letizia wore this petrol blue tea dress by Italian brand Bottega Veneta.

Photo: Carlos R. Alvarez/WireImage

British royal Lady Amelia Windsor wore hot pink as she checked out the Valentino show at PFW on March 4.

Photo: Pierre Suu/Getty Images