Well Pinkie Pie said herself that "Everypony is my Friend."
So pinkie is friendly with all ponies.
As a favorite though? Well, there is no known one specific pony of who she likes best, but there are her five "mane" friends that she loves a lot (Twlilight, Fluttershy, Rainbow Dash, Rarity, and Applejack).
Their official names are Marble Pie (the gray one) and Limestone Pie (the blue one). Before their names were known, the fandom called them Inky and Blinkie respectively.
In total, through the show, we have seen a total of three sisters pinkie actually has. Although, we only ever meet one in season for named "Maud Pie."
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Pinkameana Diane Pie
No. Pinkie Pie has threes sisters, all of whom are earth ponies.
Well, from the episode The Cutie Mark Chronicles, we are shown that Pinkie has two sisters who are later named Marble and Limestone (fan named Inky and Blinkie) but it mentions in a My Little Pony book that Pinkie also has another sister. An older one who remains unnamed at the moment. Some fans of the show also have rumored Peachy Pie as her sister though this will probably never be confirmed.
In "The Cutie Mark Chronicles" when showing pinkie's flash back of her younger, seeing Pinkie's family, there are two sisters she has. In season 4, in the episode "Pinkie Pride" she looks at a picture when singing a song that shows a third sister. It could be a mistake, or that the show was forshadowing an upcoming episode of the same season called "Maud Pie" where we meet one of Pinkie's sister named "Maud," and shows to be the complete opposite of Pinkie.
the pinkie is not the smallest
Your pinkie Is the smallest finger on your hand
Pinkie Brown was created in 1938.
Pinkie Road was created in 2009.
The duration of Pixel Pinkie is 1440.0 seconds.
The thumb is way stronger than the pinkie.
No. Pinkie Pie is usually quite cheerful.
Pinkie C. Wilkerson was born in 1948.