In cute display of idol friendship, f(x) rapper Amber wore a pair of socks printed with a llama design gifted by K-Pop singer Ailee.

Amber thanked Ailee and tagged her in an Instagram post which showed off the cute llama socks.

A picture of the llama animal -- which has long been joked as looking like Amber - can be seen when the socks are worn and placed side by side.

Fans found the socks adorable and also congratulated Amber for having found such a great friend in Ailee.

"They're so cute," "Where can I get those?" "Ailee honestly seems like a genuine person. The kind of friend you find once in a lifetime. Love her to the heavens and back," commented fans on Instagram.

Amber and Ailee developed their strong friendship as idols that were born in the United States but settled in South Korea to pursue their dreams as K-Pop idols.

Late last year, the two girls even starred in the travel reality show One Fine Day where the pair spent almost a week in Jeju Island for some rest and relaxation, according to Soompi.

Amber and Ailee had a grand time in the popular vacation hotspot, dancing together at random times and even taking a late night dip in the ocean.

Then earlier this March, the rapper and singer buddies treated fans to a powerful collaboration cover of Bruno Mars and Mark Ronson's "Uptown Funk" in the music show Yoo Hee Yeol's Sketchbook.

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Mickey is a writer and digital content creator based in Manila. He is a co-founder of ZAVI App and editor of the small business blog IndieMickey. He has also been bitten by the K-pop fashion bug - follow him on Instagram @mickjami.