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The sewers were faced with the toughest pattern challenge yet...

Sewing Bee was revisiting the Hollywood glitz and glamour of the 1930s, as the remaining sewers entered the quarter finals.

Tonight's competition was paying homage to Coco Chanel by challenging the contestants to create a pair of sailor trousers with daring button openings in what Esme Young and Patrick Grant deemed the "hardest pattern challenge yet". Even harder than the high top trainers with those nightmare eyelets.

"This is not a tote bag, sad to say!" Debra declared.

The judges advised firm fabric to give the trousers structure, but if the material was too thick, the trousers would end up looking bulky.

Lindy hopping with excitement for 1930s Week, it's @SaraPascoe, @PaddyGrant and Esme Young. #SewingBee pic.twitter.com/UEWXVqcDCw

Pattern challenge was as follows: The front legs joined at the crotch, slits are created at the side to create a bib opening, pocket bags are inserted and the front leg pieces are then joined to the back. A waistband is attached, buttons and button holes are added and hems are turned up to complete the jaunty sailor look.

For the pockets: Pocket Pieces are cut with the right side of the fabric facing up, the facing is attached to the top pockets to enclose the edge top and pocket pieces are sewn together. They are then folded over and overlocked to form the pocket bag, and then attached to the front of the trousers. Finally, they are folded inwards to sit neatly behind the bib.

These Pattern Challenge sailor trousers have us yearning for life on the high seas 🌊 #SewingBee pic.twitter.com/5Un4qRmWyJ

Cristian created a tasteful mauve pair which had well constructed pockets but he accidentally sewed the buttons vertically, which saw him come in second place.

While Annie used a decent fabric and the trousers looked good from afar, her buttons were all over the place so she came last. Because Brogan had sewn her pockets shut (oh, and one fell off when Esme touched it) she came in fourth. Third place was Debra, who had used too heavy a fabric and had a hole in one of her pockets. In first place was Man Yee, fresh off of her Garment of the Week win, with her trousers boasting the neatest and most well-constructed pockets.

The Transformation Challenge saw the sewers turn shabby secondhand men's shirts into a 1930s-style women's going out blouse. Esme was thinking defined waists, puff sleeves, lots of geometry, and statement details around the neck. Or as Patrick enjoyed his play on words: "Create a waist out of waste!"

What a Transformation! 1930s inspired blouses fashioned from two men's shirts. #SewingBee pic.twitter.com/GeOCScfijx

Brogan was last as although the judges liked her colour combinations of pink, orange and purple, they wanted more of a 1930s collar and thought it looked a tad like a pyjama top. Cristian's green silk blouse with a matching lace tie came fourth as the judges would have liked to have seen a contrasting tie instead for more razzle dazzle '30s style.

Annie's green and yellow colour combination and puff sleeves won over the judges but they would have liked more of a statement tie, and Debra sailed into second with her leopard print and polka dot creation with a beautiful pleated bib and gathered waistband.

Man Yee was on a roll, as her incredibly smart shirt featured a geometric collar that was "so 1930s", and Esme and Patrick loved its overall understated style and simplicity.

It's hard to believe Man Yee's 1930s inspired blouse started life as two men's shirts! #SewingBee pic.twitter.com/CWeBBPAKuT

So it was Annie and Brogan in the bottom, with Cristian not too far behind, meaning the heat was on for the Made to Measure challenge, for which they had to make a bias cut gown inspired by 1930s Hollywood glamour.

Brogan created a pink gown inspired by Ginger Rogers with a full circle skirt, and she not only got a "chic", but an "incredibly chic" from Patrick, who complimented her geometric seams and diamanté trim. The hem had been pulled out of shape and the bust wasn't low enough, leaving Brogan a little bit emotional towards the end of the show.

Man Yee was creating a Jean Harlow style ivory gown with a shoulder scarf and cross front bodice which featured a well-sewn knot band and was described as "glamorous" by the judges.

The colour of Debra's gold gown really bowled over the the judges, who were also impressed by the neat and elegant seams across the front and back.

Oozing old school glamour! These bias cut dresses look like they're straight from the silver screen. #SewingBee pic.twitter.com/O6JuWCHyzz

Patrick thought the fit of Cristian's gown looked terrific, but he had used a lyrca stretch which didn't exist in the 1930s and the sleeves were unfinished.

Annie created the "epitome of 1930s Hollywood glamour" with her vibrant red gown – also inspired by Jean Harlow – which had a stunning fit that skimmed the body in a delicate way. Patrick called it "fabulous", and she was awarded Garment of the Week.

Sadly, it was time to say goodbye to Cristian who said, "I've made some friends for life and I wouldn't change anything for the world."

Cristian, your eye for fashion and crisp sewing brought elegance to the catwalk each week. You'll be so missed! #SewingBee pic.twitter.com/sSlneINo5u

The Great British Sewing Bee continues on Wednesdays on BBC One and you can catch up on iPlayer.