The stream or post is likely designed for both French and English-speaking audiences, a common tactic to broaden reach.

Use the Instagram Create mode (the two A's icon) and swipe to the "Happy Birthday" template to tag the creator.

Ensure your birthday is set in the Instagram Accounts Center so your followers get a reminder when you go live.

The "Part 1" tag suggests this is the beginning of a multi-part series or a long celebration being broken down into highlights. Related Instagram Trends for Birthdays

The phrase appears to be a promotional title or announcement for a specific content creator's event, likely combining a bilingual (French/English) theme with a Birthday Stream and a new Instagram post . Key Features of this Content

You can now post carousels with mixed aspect ratios (portrait, square, landscape), which is ideal for "Part 1" photo dumps of a birthday event.

On Instagram, "Birthday for Notes" allows users to see a confetti explosion when they type "happy birthday" or mention a friend's birthday. This is often used by creators during their birthday week to engage followers.