• My Sister Doesn't Know How To Act Her Age Tee
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  • My Sister Doesnt Know How To Act Her Age Tee 1
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My Sister Doesn't Know How To Act Her Age Tee

My Sister Doesn't Know How To Act Her Age Tee

$35.26
$35.26
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Size: S
Color: Black Heather
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Returns

We accept returns within 30 days of delivery. Items must be unworn, unwashed, and returned with original tags attached.

Care Instructions

To preserve the beauty of your dress, we recommend gentle hand washing or dry cleaning. Do not bleach. Hang or lay flat to dry. Steam or iron on low heat if needed.

Shipping

Orders are processed within 1–3 business days.

  • Standard Shipping: 5–9 business days — $3.95
  • Express Shipping: 4–7 business days — $9.95

Delivery times are estimates and may vary depending on your location. Tracking information will be provided once your order has been shipped.

Product Description:

Your sister? Yeah… she’s grown, but you’d never guess it by the way she acts. One minute she’s quoting cartoons, the next she’s challenging someone to a dance-off at a family BBQ. And honestly? You wouldn’t want her any other way.

This tee is for all the sisters who skipped the “act your age” memo—and proudly keep things wild, loud, and hilarious. Whether it’s inside jokes, spontaneous adventures, or just her refusing to be boring, this shirt sums her up perfectly.

Soft, playful, and made for laughs, it’s the kind of tee that starts conversations and brings out stories. Gift it, wear it, or grab one for her too—because some sisters are forever young at heart (and slightly chaotic in spirit).

Size guide S M L XL 2XL 3XL
Length (inches) 28 29 30 31 32 33
Width (inches) 18 20 22 24 26 28
  

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My Sister Doesn't Know How To...
S /
Black Heather
$35.26
$35.26
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Sentinel Threads
My Sister Doesn't Know How To Act Her...
S /
Black Heather
$35.26
$35.26

what our customers say about us

4.9

Based on 100+ Reviews

4.9
12136 Reviews
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  • E
    Emily R.
    US flag
    Verified Buyer
    Perfect for a summer wedding
    I wore this to my cousin's wedding and felt amazing all day. The fit was exactly as expected, and I received so many compliments. I ordered my usual size S.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 23 2
  • O
    Olivia H.
    US flag
    Verified Buyer
    Beautiful dress
    Really happy with this purchase. I only wish I had steamed it before trying it on because it arrived with a few wrinkles from shipping.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • S
    Sarah T.
    US flag
    Verified Buyer
    So flattering
    I have a hard time finding dresses that fit my waist properly, but this one was perfect. Very comfortable to wear for several hours.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • C
    Chloe W.
    US flag
    Verified Buyer
    Worth every dollar
    The quality surprised me. The material has a nice weight and doesn't feel see-through at all. I'll definitely order another style.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • A
    Amanda K.
    US flag
    Verified Buyer
    Engagement photo approved
    Bought this for our engagement photos and couldn't be happier. It looked beautiful in natural light and fit perfectly.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • N
    Nicole B.
    US flag
    Verified Buyer
    Runs slightly roomy
    I was between sizes and ordered the larger one. It still looked great, but I probably could have gone with my usual size.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • H
    Hannah C.
    US flag
    Verified Buyer
    Comfortable all evening
    Wore this to a formal dinner and didn't have to adjust it once. It stayed comfortable from start to finish.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • M
    Megan L.
    US flag
    Verified Buyer
    Love the quality
    Beautiful stitching and a really elegant design. It feels much more expensive than it actually is.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • R
    Rachel S.
    US flag
    Verified Buyer
    True to size
    I followed the size chart and ordered a Medium. It fit exactly the way I wanted.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • A
    Ashley D.
    US flag
    Verified Buyer
    Received so many compliments
    Everyone kept asking where I bought this dress. It's simple, elegant, and easy to accessorize.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • L
    Lauren P.
    US flag
    Verified Buyer
    Vacation favorite
    Packed this for my trip to Italy and wore it twice. It's lightweight, comfortable, and photographs beautifully.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • B
    Brittany G.
    US flag
    Verified Buyer
    Lovely dress
    The zipper was a little stiff the first time, but after wearing it once everything worked perfectly. Overall, I'm very happy.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0
  • K
    Kayla N.
    US flag
    Verified Buyer
    Helpful customer service
    I wasn't sure which size to buy, so I contacted support first. They recommended a Small, and it fit perfectly.
    My Sister Doesn't Know How To Act Her Age Tee     Was this helpful? 0 0

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