A beautiful woman with an even more beautiful soul. Sierra exudes happiness and has the brightest smile. She’s a solo singer, formerly apart of the band Alex and Sierra. She’s currently the girlfriend of 5 Seconds of Summer lead singer, Luke Hemmings.
by Bodaciouscalumhood February 25, 2019
The Sierra effect can only stay true for "crystalline". For she and only she possesses the power of the Sierra effect, taking different forms of a phoenix, a unicorn and a mermaid. Her aura, her being and her very soul is defined by this phenomenon. For she is the Sierra effect. For she is the one and only 'Shreya Kulkarni'.
The Boho angel saved my soul by casting upon me her very blissful enrgy, merely called 'the Sierra effect'
by Sierra_Kilo_Mike_Kilo October 15, 2019
The name given to a female prostitute who gives oral sex to pleasure any random stranger. This female prostitute also most likely has braces and a big ass.
by schneakyschnake April 09, 2011
Sierra haschak is a YouTuber/singer
Who was oringinally a dancer from Temecula dance company
But she no longer dances
She’s a soon to be an 15 year old but she definitely doesn’t look it
Was once shipped with mattyb
She doesn’t act the same off and on YouTube
Her channel is for little kids
So they don’t have to watch people like lil tay
She’s been on dancing with the stars and more
Don’t get her confused with her sisters
Who was oringinally a dancer from Temecula dance company
But she no longer dances
She’s a soon to be an 15 year old but she definitely doesn’t look it
Was once shipped with mattyb
She doesn’t act the same off and on YouTube
Her channel is for little kids
So they don’t have to watch people like lil tay
She’s been on dancing with the stars and more
Don’t get her confused with her sisters
Sierra haschak is a dancer
by Bossman1317 June 16, 2018
by Nikssa March 04, 2019
by Mr. Baby May 25, 2011
An overbearing, overly emotional woman with no sense of giving her significant other space. Is known for suffocating the person of her affection to the point where even sepuku isn't a viable means of escape.
by Str8razor666 December 13, 2017