Oh gods, songs “We are family” and “We R who we R” inspired me much. I think they suit this one.
 
From left to right:  
Hummingbird (Hummy)  
Personality: Frantic, kindhearted, hilarious.  
Hummingbird is the daughter of Fluttershy and Pinkie Pie. As their daughter, she can seem like a shy one, but if you’ll know each other better, you’ll see actual Hummingbird — bubbly-headed, frantic girl with not that bad jokes. She’s a good listener and friend who can give a god advices.  
She’s organizing events and does it quite carefully and with love. Also she likes flirting with anybody she wanna to. Sometimes it puts her in tiny troubles.
 
Clarissa Crystal (Clarrie or Crys)  
Personality: Witty, neurotic, smart.  
Clarissa Crystal is the daughter of Twilight Sparkle and Rarity. She’s nerdy lady who writes books about gemstones, when she has a spare time, she likes doing detective drafts. She’s really nervous when something didn’t goes exactly as planned. Clarrie appreciates her time and hates ponies be late. Adores her uncle Shining Armor.
 
Golden Gala (Gal)  
Personality: Hot-headed, proud and hard-working.  
Golden Gala is the daughter of Applejack and Rainbow Dash. She’s a hot head who can’t stand in one spot. She got scarred and stuck many times, but none the worse for wear. Fast flying is her strong suit and proud and her ego’s size of a sun. Gal’s liking giving weird nicknames to her friends as well as Clarrie (Fancie) and Hummy (Gluskin), but Vannie is okay with it, unlike Clarrie. Her mentor’s Spitfire and she tries her best to impress her.
 
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I’ll update their bios soon when I’ll barely define ‘em.