Here is the full list of all 46 The Sisters - Party of the Year trophies - there are 36 bronze, 5 silver, 4 gold and 1 platinum.
Obtain all the other trophies
Win without falling more than two times in "Mud Pit"
Win "Mind-Boggling" on hard mode
Prepare seven recipes in the allotted time on hard mode in "Cupcake Factory"
Win the "Whatever Race" with all the characters in the game
Win the All or Nothing mode with at least 20 points
Hold for 20 seconds in "The Crazy Chandelier"
Finish the race without hitting the wrong button in "Triple Gallop"
Win "Tag!" without being tagged
Win with less than 5% of the toys in "Express Cleaning"
Win by hitting at least four special targets in "Unicorn Toss"
Win a match without making a single mistake in "Hungry Little Monsters"
Win without getting any penalties in "Mega Penalty Kicks"
Win without dropping glass in "Round for Everyone"
Unlock all the outfits for Maureen, Wendy, and their friends
Unlock all the hairdos and hats for Maureen and Wendy
Finish adventure mode with Maureen
Win with a score of at least 10 points in "End-of-Year Dance"
Hit your stake five times in a row first in "Hit Your Stake"
Don't let more than five balls pass by in "Extreme Ping-Pong."
Bring seven of the dogs back to your pen in "Doggies This Way"
Win with a total of at least 4 bowls in "Bulk Chocolate"
Mow 40% of the grass in "The Crazy Lawnmower"
Finish all the "Race" quests in adventure mode
Finish all the "Investigation" quests in adventure mode
Finish all the "Search Area" quests in adventure mode
Finish adventure mode with Wendy
Win with a score of at least eight points in "Claw Crane"
Finish all the "Photo" quests in adventure mode
Pick up all the collectibles in adventure mode
Collect all the figurines in adventure mode
Collect all the mushrooms in adventure mode
Win by pushing at least two opponents into the water in "The Cracked Island"
Finish all the "Fishing" quests in adventure mode
Collect all the flowers in adventure mode
Finish all the "Treasure Hunt" quests in adventure mode
Ride 26 miles on a scooter and/or a skateboard
Finish all the "Feeding" quests in adventure mode
Win by filling at least four special crates in "Mayhem at the Market"
Finish all the "Jet Ski" quests in adventure mode
Finish all the “Collection" quests in adventure mode
Collect all the coins in adventure mode
Win with at least four special trash cans in "Trash Challenge"
Make at least 25 fries in "The Fries"
Paint at least 50% of the wall in "Dominant Color"
Finish The Pixel Sisters on the console in the living room