Brandwave

Lululemon vs Under Armour:Which is more popular?

In September 2026, Lululemon had more branded searches than Under Armour among sports bra brands worldwide. Lululemon had about 11.1 million branded searches, while Under Armour had 3.4 million. Lululemon made up 18.2% of all sports bra brand searches we track, and Under Armour accounted for 5.5%. When we asked ChatGPT and Google AI Overviews about sports bra brands, Lululemon appeared in four of the five answers and Under Armour in one. Lululemon was mentioned before Under Armour in every answer that named either.

Among sports bra brands worldwide in September 2026

Who do people search for more?

Lululemon, about 3 searches for every 1 for Under Armour

Lululemon 11.1M searchesUnder Armour 3.4M searches

Who does AI mention more?

Lululemon, mentioned in 4 of 5 answers, Under Armour in 1

Lululemon in 4 of 5Under Armour in 1 of 5

Who does AI recommend more?

Lululemon, named ahead of Under Armour in 3 of 3 answers

Lululemon first in 3Under Armour never first

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Top sports bra brands in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Lululemon was mentioned in four out of five: in two of the three ChatGPT answers and in both Google AI Overviews. Under Armour was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews. Lululemon was listed before Under Armour in every answer that named either.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Nike1st
  2. Lululemon2nd
  3. Brooks2nd
  4. Enell4th
  5. Under Armour5th
  6. Adidas–
  7. Victoria's Secret–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Lululemon4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Nike3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Brooks2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Enell2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Under Armour1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Adidas0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Victoria's Secret0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about sports bra brands

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 19, 2026.

Is Lululemon or Under Armour more popular in search?

This chart shows how often people search Google for Lululemon and Under Armour by name. Each line represents a brand's share of searches for all seven sports bra brands we track, month by month, from English-language searches worldwide.

Lululemon and Under Armour among sports bra brands worldwide, by month

Share of searches by month for Lululemon, Under Armour. The figures are in the table below the chart.

View monthly share of searches table
MonthNikeAdidasLululemonUnder ArmourVictoria's SecretBrooksEnell
Oct 202537.7%35.2%20.6%6.2%0.25%0.14%<0.01%
Nov 202538.1%34.6%21.6%5.3%0.21%0.1%<0.01%
Dec 202536.7%32.7%24.3%6%0.2%0.09%<0.01%
Jan 202642.2%31.9%19.7%5.9%0.2%0.11%<0.01%
Feb 202640%35.9%18.2%5.5%0.22%0.1%<0.01%
Mar 202641.2%37.7%15.2%5.6%0.19%0.12%<0.01%
Apr 202639.5%36.9%17.8%5.4%0.26%0.15%<0.01%
May 202637.4%40.3%16.8%5.1%0.25%0.14%<0.01%
Jun 202637.9%39.2%17.3%5.2%0.26%0.12%<0.01%
Jul 202637.8%39.8%17%5.1%0.25%0.11%<0.01%
Aug 202637.7%40%16.8%5.1%0.25%0.14%<0.01%
Sep 202640%35.9%18.2%5.5%0.27%0.12%<0.01%

How has the Lululemon and Under Armour comparison changed over the last 12 months?

3 findings
  • Lululemon was ahead of Under Armour in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Lululemon’s share of searches among sports bra brands worldwide moved from 20.6% to 18.2%, and its estimated monthly branded searches moved from 13.6M to 11.1M.
  • Across the 12 months ending September 2026, Under Armour’s share of searches among sports bra brands worldwide moved from 6.2% to 5.5%, and its estimated monthly branded searches moved from 4.1M to 3.4M.

How did search popularity change for sports bra brands worldwide in September 2026?

2 changes

  1. In September 2026, Lululemon gained share of searches among sports bra brands worldwide, from 16.8% to 18.2%.

  2. Estimated monthly branded searches for Under Armour worldwide fell 18.1% over 12 measured months, from 4.1M to 3.4M in September 2026.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using Lululemon’s and Under Armour’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Lululemon

1 branded search term

  • lululemon

Under Armour

1 branded search term

  • under armour

How the Brand Demand Index is measured

Other head-to-heads among sports bra brands

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