Possible Clues:

• Like a follower of fashion satisfied by nothing old
• Common cry from a younger sibling
• "I'll have some as well!"
• 'I'm the exact same way!'
• Tagalong's remark
• 'So do I'
• "Samesies!"
• Copycat's comment ... or, phonetically, a hint to this puzzle's theme
• Hashtag of an anti-harassment movement
• Trending hashtag beginning in 2017