B&W summer outfit with the cutest dash of color, with an embarrassment* of panda modern nagoya obi, paired with a yukiwa (snowflake) kimono.

To go with the bamboo pattern which reminds them of Tanabata/stars festival celebrations, OP added a star obiage and a lovely summer obijime with colorful beads (mimicing colorful tanzaku paper strips).

*English group names are always such a trip xD

Soothing deep purple ground with shimmering silver stripes for this Tanabata (Stars Festival) themed summer obi. Tanabata celebrates every 7th of July (7th day of the 7th month) the reunion of lovers Orihime/Vega and Hikoboshi/Altair separated the rest of the year by the Amanogawa (Milky Way).

The obi patterns are:

• Geometrical stars shapes + silver threads for the night sky
  
• Itomaki (bobbin) for Orihime (her name lit. means “weaving princess”)
  
• Bamboo branches, where people hanged tanzaku (paper strips) inscribed with their wishes 
• Tanzaku with words Tanabata, hoshi matsuri (star festival), amanogawa (milky way)
  

Super cool hanafuda (”flower cards”) + ryuusui (stream) yukata (seen on), paired with a Rumirock obi. 

I believe I’ve never touched Hanafuda cards here, so buckle up for a long post ;)

Hanafuda is a card game with 12 different suits of 4 cards. Each suit is linked to a lunar month through symbols, all inspired by classical culture (months where later matched to Western calendar hence why some symbols seem off).

Please note that in the list below, I’ll use ‘meaning’ in the broad sense as following symbols often have many overlaping significations:

睦月 Mutsuki  (1st lunar month) / January
=> Symbols: matsu (pine), tsuru (crane), hi (sun), ‘akayoroshi’ tanzaku (paper strip, with auspicious あ(か)よろし meaning lit. ‘red is good’ = ‘really wonderful’)
=> Meaning: eternity, happy/new beginnings as January is the New year month

如月 Kisaragi (2nd lunar month) / February
=> Symbols: ume (plum blossoms), uguisu (bush warbler), ‘akayoroshi’ tanzaku (paper strip, with auspicious あ(か)よろし lit. ‘red is good’ = ‘really wonderful’)
=> Meaning: beginning of spring, well read people (especially refers to Michizane/Tenjin), a match made in heaven
As a side note, plum branches rising to the sky is an auspicious motif known as yariume/“spear plums” or tachibai/“rising plums 

弥生 Yayoi (3rd lunar month) / March
=> Symbols: sakura (cherry blossoms), hanamimaku (curtain, here cherry blossoms viewing parties), ‘Miyoshino” tanzaku (paper strip, Yoshino is a place famous for its sakura)
=> Meaning: beautiful yet fleeting life (like the delicate sakura blossoms)

卯月 Uzuki (4th lunar month) / April
=> Symbols: fuji (wisteria), hototogisu (cuckoo), red tanzaku (paper strip)
=> Meaning: coming of summer, beautiful yet fleeting life (cuckoo sometimes symbolize mourning souls). Fuji could also refers to famous episodes of the Tale of Genji.
As a side note, cuckoo also stands for patience in Japan, probably because of the zen charade known as “If the bird doesn’t sing..”

皐月Satsuki (5th lunar month) / May
=> Symbols: kakitsubata (iris), yatsuhashi (zigzag bridge​), red tanzaku (paper strip)
=> Meaning: deep and nostalgic love, inspired by famous poetical scenery from the Tales of Ise (motif is present in many paintings like this screen by Korin). Iris are also a symbol of strenght as seen in Tango no sekku festival

水無月 Minazuki (6th lunar month) / June
=> Symbols: botan (peony), cho (butterfly), purple tanzaku (paper strip)
=> Meaning: road to heaven (symbols came be found in noh piece ‘Shakkyo’ and Kabuki one ‘Kagamijishi’), butterflies often stand as a symbol for spirits or souls

文月 Fumizuki (7th lunar month) / July
=> Symbols: hagi (clover), shishi/inoshishi (boar), red tanzaku (paper strip)
=> Meaning: coming of autumn, the strong needing the meek (a variation of tiger in the bamboo grove motif)

葉月 Hazuki (8th lunar month) / August
=> Symbols: susuki (pampa grass), kari (wild geese), full moon (meigestu)
=> Meaning: moon/harvest festival (tsukimi), deep nostalgia as year goes by (nature will soon be asleep as winter will follow autumn)

長月 Nagatsuki (9th lunar month) / September
=> Symbols: kiku (chrysanthemum), sakazuki (sake cup, with kotobuki/‘long life’ kanji), purple tanzaku (paper strip)
=> Meaning: long life, immortality. In ancient japan, it was customary to drink chrysanthmum wine during Chouyou no en festival as a wish for long life (people also used to drink/use as medicine dew collected on mums leaves and flowers). As a side note, objets flowing in a stream (like sake cups) were once used as timer during poetry competitions.

神無月 Kannazuki (10th lunar month) / October
=> Symbols: momiji (maple), shika (deer)
=> Meaning: momijigari (hanami autumn twin) parties and as March card = beautiful yet fleeting life. Shika deers also have deep auspicious connotation as they are messengers of the gods in Shinto

霜月 Shimotsuki (11th lunar month) / November
=> Symbols: yanagi (willow), Ono no Michikaze and a frog, tsubame (swallow), Inazuma (thunder, wildcard sometimes bare and nicknamed “onifuda”/demon card)
=> Meaning: this card is always the most puzzling one for me, as in kimono fashion yanagi+tsubame are not truly a November motifs ^^;
But here, the most important symbol (most often only present as an umbrella!) is a driving rain under which willows dance. Poet Ono no Michikaze, walking by a riverside in that awful weather, spots a struggling frog. After many efforts, the frog finally succeeds jumping in a willow - inspiring Michikaze. This suits hence symbolizes diligence and determination.
As a side note, nure tsubame (lit. “wet sparrows”) symbolize lovers - especially star-crossed ones

師走 Shiwasu (12th lunar month) / December
=> Symbols: kiri (paulownia), houou (phoenix)
=> Meaning: longevity, life circle (“beginning to the end”), power.  Legends say phoenix can only nest in paulownia trees

I won’t go into details as to how to play with hanafuda as 1) I am terrible with cards games, and 2) I learned koi-koi rules only thanks to the Ryu ga gotoku/Yakuza video games xD (amazing game serie, if you don’t know about them, go play!!! They have been re-released not long ago)

Happy Tanabata star festival! Legend says that on that night stars Vega and Altair (as the weaver Orihime and herdsman Hikoboshi) meet across the Milky Way which separates them lovers the rest of the year.

The festival originated from China, and merged in Japan with local celebrations creating overtime the Tanabata we know of today. The most well known tradition is to hang on bamboo (or other wish trees) colorful strips of paper called “tanzaku” where people write wishes ^^

If you wish to learn more about Tanabata history and customs, have a look at the GREAT thread by @camelliakyoto

[I am not linking any source for the pretty Tanabata themed haneri/decorative collar above - any reverse image search I’ve done leads to suspicious websites… the photo here is from]

Chic and very refreshing summer outfit, with sasa (bamboo leaves) over ryuusui (rushing stream) sha silk kimono, paired with a lovely antique obi with poem tied among bamboo.

This whole outfit hints at Tanabata (Star Festival) tradition of hanging tanzaku bearing wishes in bamboo so the wind can carry one’s hopes to the heavens.

Tanabata themed art by Mariko Nakanishi. This yukata outfit is so pretty, hinting just right at Stars festival celebrations (bamboo with tanzaku wish strips / hair styled with a starry barrette)

Happy Tanabata everyone!

Lovely blue outfits by Usagi Komachi. OP tagged the first one as perfect for Tanabata (star festival) and I love it from the tiny star netsuke to the colorful yanagi pattern which reminds me of tanzaku wishes dangling from trees: