It’s Canadian-born designer Erdem for Kate today, the second time she has appeared in one of his creations on the Royal Tour. Kate chose the designer’s ‘Jacquenta’ dress from the pre-fall 2011 collection for this morning’s non-denominational worship service aboard the HMCS Montreal. Below, the couple disembarking the ship.
She also wore it for the afternoon ceremonies in Quebec City.
There was a formal welcoming ceremony at City Hall. 
Followed by a walkabout. 
We want to acknowledge the amazingly rapid identification of the dress by our Facebook friend Anne.
Canadian Heritage
The dress is fitted, has three-quarter length sleeves, and showcases Mr. Moralioglu’s skill with lace overlays and embellishment.
Via Erdem
The Duchess again demonstrates her diplomatic savvy by choosing a dress from a ‘favorite son’ designer, one that also reflects awareness of Quebec’s provincial flag, it is blue and white. Subtle touches, to be sure, but ultimately important in the bigger scheme of things.
Kate repeated her LK Bennett Sledge2 pumps.
And her Stuart Weitzman ‘Muse’ clutch from Russell and Bromley. 
She also repeated her sapphire and diamond earrings and Tiffany “Diamonds by the Yard” bracelet from the Elsa Peretti collection.
I think all of these may be categorized as “go to” items for the Duchess. Also of note, Kate has once again opted for a dark or navy blue, at this point, I would say it is becoming one of her signature colors, along with white.
For those interested in the designer, Net-a-Porter has a number of pieces available, as does My Theresa. For a look at similar dresses with a *much* friendlier price point, pop over and visit our friends at Kate Middleton Style Blog.
11 Celebrities Copied Their Colleagues’ Outfits, and We Can’t Decide Who Wins This Fashion Battle - Sian Leh
Saturday 6th of February 2021
[…] In 2015, when Caitlin Jenner gained self-confidence, she started to appear often in public and pose for the paparazzi wearing exquisite outfits. It seems like she decided to learn from the experience of her acknowledged style icon, Kate Middleton, who she’s taken many ideas for her looks from. For example, Caitlin’s blue dress with lace very much resembles an outfit that Duchess of Cambridge chose for a public event in 2011. […]
White Hot Lace « Style Pick
Sunday 23rd of October 2011
[...] Duchess of Cambridge, again, wore lace on her Canada visit. This time, she wore it in navy – a design by Erdem. These royal style icons have indeed taken lace from being a bridal staple that symbolises [...]
Stephanie G
Friday 8th of July 2011
I am from Quebec, and as stated, the blue was a sensible touch. In a province where people are still debating about separating itself from Canada, and being overall anti-monarchist, the province's own identity is really important (and even more in Quebec City than Montreal I would say). I can't even stress how big of a diplomatic faux-pas it would have been if she would have worn red. It's not a colour she favours anyway, but she sometimes has red details (like the red scarf) and that would've been wrong in Quebec City.
janet james
Tuesday 5th of July 2011
This Erdem dress is delicious, but, yes, she needs a stylist and soon.
Pretty in Navy and Nude « Pretty In Kate (Middleton)
Tuesday 5th of July 2011
[...] love of the color navy is also becoming obvious with her current North American tour. It’s a great color – classy and as flattering as black without looking drab. So armed with [...]