I discovered the Scientific Seamstress, Carla Crim, way back in 2011 when she did a fantastic series on Sew Mama Sew about drafting, grading, formatting, and marketing PDF patterns. Carla has since gone on to write 2 books on pattern making for children’s clothes:
Carla also has her own line of patterns called the Scientific Seamstress because she is a molecular biologist turned pattern maker! She applies the rigorous testing techniques she learned in the lab to making sewing patterns with instruction that are clear and concise. Carla has also partnered with fabric designer Jennifer Paganelli to develop the pattern line Sis Boom.
We at the Scientific Seamstress/Sis Boom patterns believe in high quality patterns and detailed sewing instructions. Each pattern has plenty of options and a great size range included! Just like actual science we focus on making patterns that are clear and logical with extreme attention to detail. We also have a wonderful and supportive facebook group that Carla, Cathy, and Jeanine are very active in as well as thousands of sewists like you, so when you are purchasing a pattern from us you never have to feel like you are going it alone and can ask questions anytime.
The Scientific Seamstress and Sis Boom PDF patterns are quite extensive! They include detailed, but concise, step-by-step instructions with both photos and diagrams, design options, outfit suggestions, lists of materials, and comprehensive sizing information. Plus tips, tricks, and alternative methods are incorporated whenever needed.

Not only that, but on the Scientific Seamstress blog you will find many tutorials for adding pattern extras. Above you can see all the options for the simple Tabago Tank pattern. And below you can see the All the Rage Raglan top tutorials. There is even a tutorial for upcycling three knit tanks into a cute raglan dress with a hood!
Now for the giveaway! Two lucky winners will get to choose 3 patterns from the Scientific Seamstress/Sis Boom shop. Use the Rafflecopter widget below to enter by Tuesday Feb 3. This giveaway is open to international entries, void where prohibited by law. Winners will receive 3 PDF patterns of their choice.
Good Luck and Happy KCW!
Don’t forget to enter all the giveaways this giveaway week: Pattern Workshop, Scientific Seamstress and Sis Boom Patterns, Whipstich, Crafterhours, Figgy’s
I haven’t had a chance to try any of the patterns yet, but I’m drawn to the girls dresses.
I’d love to try the Shana tunic!
I love the hood and ragland sleeve, very cute.
Oh I love the woman peasant dress!
I made the pajama pants ( Scientific Seamstress) for my husband and it was a huge success… he placed some orders for more 🙂
My favorite pattern is the Precious Dress. Super cute and so many options!
I love the Emily Bell-Sleeved Tunic
Favorites are Jeanine Jumper and the Devon!
I love the simply sweet dress – super easy and cute to make!
Looking forward to trying some of these sweet patterns for my granddaughter.
I haven’t tried any of them but would love to!
I love the ethan shirt! Ive learned (the hard way) that the sizing is spot on and i dont need to go up the next size. Instructions are awesome. Im going to try to use the pattern for a hack into a romper for my girl and a jon jon for my baby boy.
Love the Betty Ann top/dress – perfect for my girls.
I love the raglan!
My favorite (today – I change my mind regularly) is the Precious Dresses … love the retro feel.
My favorite is the Jamie dress. I also have the kids version (the Marissa) that I will be using for my granddaughter. But I just purchased the new Carolina Mae, and that could very well become my favorite, once I have a chance to stitch it up!
I would love to try the new Carolina Mae, Jenny and Tortola. Oh, maybe I should think about some little guy patterns to try, too 🙂
The Marco shirt pattern looks fabulous!
I love the Marissa dress, but I think that my first choice would be the All-the Rage raglans pattern. I could see the kids wanting to wear a version of that pattern every day of the week. Thanks for the chance to win.
Would love the All the Rage Raglans for my kiddos and the Dana top for me!
love the classec raglan shirts!
I picked up the Jamie Dress pattern just before I found out I was pregnant with my daughter and was so disappointed that it would have to wait, but it’s back on the to do list for this summer.
I love the Bettyann top/dress pattern. So cute!
Huge fan of the precious dress! Also, sewing my first Jenny right now, so that’s a close second:)
Portrait peasant or simply sweet! Love all of the options for both.
I love all the Scientific Seamstress/Sis Boom patterns, but my favorites are probably the Perfectly Preppy skort and the Portrait Peasant.
The only thing I’ve made is the Gabriella Fae and I LOVE it!
The romper patter was really easy for me as was the Devon. REALLY want to try the Carolina Mae 🙂
I want to make me the Carolina mae!!! Oh and the sophie Tunic LOL Love them all really,
Tobago for kids, Devon for ladies 🙂
I would love to try a couple of your patterns 🙂
I love the Meghan, and the Molly. My first pattern was the Dana
I don’t think I could choose one! The Judy’s are super comfy and I love the Precious for little girls! 🙂
My favorite so far is Devon; however, Carolina Mae is calling my name!
I purchased a few different adult dress patterns. As soon as the mayhem stops, I plan on making them!
My favorite pattern is the Jamie. It’s very easy to make, with beautiful results!
I love the Betty Ann – its on my sewing list for this spring!
It’s hard to choose just one. For me, it’s the Patricia. For my boys, the easy fits. For my girls, the Portrait Peasant. And for DH….I’m not sure yet.
I love all of them – lol! If I had to choose, it would be the Precious dress.
My favorite pattern is the Rosetta Ruffle Bag.
The women’s peasant dress is my favorite pattern. Love all the options it comes with as well.
I just love these patterns! I really want to get the Bettyann next!
Love the Angie and the new Carolina Mae 🙂 Thanks for the chance to win!
I’m a sucker for tunics!
the raglan. all the way. unisex and versatile and wonderful.
the Betty Ann top/dress is the one I’ve sewed up that I love on my kids!
The Marissa is my next grandgirlie project. Have printed it out and am working out measurements right now.
I’ve been eyeing the Angie dress 🙂
I love the All the Rage Raglan pattern! Great for boys.
I love the style of the Bebop dress. It’s a great baby shower gift.
The patchwork twirl skirt I have made for my daughters. I’m thinking I should start sewing for myself .
I just bought the Carolina Mae – I can’t wait to try it!
I love all the Sisboom patterns I have made for myself & my daughters including Angie, Jenny & Jamie but my favourite for the kids would have to be Molly as a quick & easy to wear dress.
I have nearly all the patterns & the Caroline Mae is on the list to make as is getting Gabriella Fae pattern for my grandies.
All of them!!!!
I love the Simply Sweet Tops and Dresses
I really love the Raglan and the Easy fits
My all time favorite is the Angie!!! Favorite dress!!!!!
I’m a big fan of the Ethan shirt. Incredibly precise instructions!
the Shana & Emily Tunics
I love the Carly Romper!
I love all the different version in the patterns!
the raglan shirt/hoodie. I know my kids would love that.
I love the portrait peasant dress.
I love the Meghan Peasant
Love them all- I would like to try the Jamie!
i would love to try the jamie. it keeps looking at me. i keep looking at it. then cleaning the toilets calls. one day…
I love the Marissa, simply sweet, and love love love the Easy Fits for the whole family.
I haven’t tried any of her patterns yet but I love a raglan look so the raglan rage would be the first I’d choose.
I love that All the Rage Raglan dress. Love sewing knit dresses.
The Tabago Tank, too sweet!
My favorite is the Sis Boom Tabago Tank. It’s so versatile to make into a dress or long tunic and is cute on any size girl!
The Leighanna dress looks pretty cute.
Love the precious dress and the simply sweet pattern. Have already made 4 of the easy fits!
The Precious Dress!
The Beebop is my favorite!
All the Rage raglan! I have made it more times than I can count!
I’d love to do the Men’s Button Up Shirt for hubby! 🙂
I have so many that I love, but my collection is not yet complete–I could use a few more!!!
I have many of them, but the Angie is my favorite!
Wow! Would love to win this! Only have the Field Research Pants…ready for more!
The Angie is my favorite.
I love that the raglan pattern can be customized for boy s and girls. Also would like to try the Ethan shirt–often hard to find inspiring boy patterns.
Love your patterns, need more!
The Ethan shirt is gorgeous. Still trying to figure out the collar though.
I own most of the Scientific seamstresses patterns, they truly are divine!
(Oops, I hit enter before I finished my thought!)
I am currently in love with the new Gabriella Fae!
The raglan pattern looks so useful and cute! 🙂
Ive had my eye in the Patricia Tunic for a while.
Just recently sewed with the Basic Pants pattern, and it’s such a GREAT fit!!!!
The tabago tank looks really cute!
Carolina Mae
I absolutely love the Portrait Peasant pattern. I have made shirts, dresses, and night gowns from it. I have used this pattern since she was 2 she is now 6 and I have used the largest size (8) for nightgowns recently. I will be looking for a pattern to replace it when she completely out grows it.
I would love to try Jenny Dress!
For sure the Betty Anne, so classic and sweet!
they are all so cute, i guess i would have to pick the raglan as it’s so versatile
I’ve made the field trip cargo pants and love it!
I love the new Gabriella Fae dress pattern =0)
I like the easy fit pants for Tweens, teens and adults 🙂
I liked the first book
definitely the tobago tank!
I want to try the Carolina Mae and Angie.
Hard to pick. It could be any of the boys for my son or even girls as I’m expecting a girl now 🙂
The Jamie dress is by far my favorite pattern!!!
Love sewing for my kids so this would be great
I like the Bishop Style BeBop Tops and Dresses for Girls pattern.