But since she had no access to social media as she circulated the red carpet, Cuthbert, now widely dubbed "Fiji Water Girl", didn't realize she was becoming perhaps the first meme of 2019 until her work was almost done. And how did she know how to work a room like that?
No one was safe. "It doesn't matter where you stand, you're in the crossfire of every shot", she told People. When it comes to photobombing, this girl is a pro.
Pictures of the "Fiji water girl" in the background of celebrity red carpet photos have been circulating at an impressive pace since Sunday's broadcast.
The publicity stunt also inspired a spoof Twitter account with hilarious consequences.
Apex Marketing Group president Eric Smallwood told Yahoo that Fiji Water saved nearly $18 million in advertising from yesterday's exposure. The Good Place's Jameela Jamil was jokingly misidentified as a character from her show on the ceremony's red carpet.
The Sydney woman - who runs the NSW Police Facebook page - made a decision to join the sweeping social media trend by replicating the Fiji Water Girl.
In an interview with Glamour, Cuthbert admitted that she's overwhelmed by all the attention she's receiving, including the sudden popularity on Instagram.
Yesterday, Cuthbert explained how she came to be such a presence on the red carpet.
The 60-year-old shared a photo of Kelleth's photobomb on Instagram and wrote: 'So, my husband, who doesn't look at a lot of show business news sites, just mentioned that I was on the CNN website. Yes, that was Canadian modelKelleth Cuthbert who appeared in the Arkells' 2015 video for "11:11".
She also has a favorite meme of the ones she's appeared in. Her water work lit a fire: a spokesperson for Twitter reports there were more than 50,000 tweets about Cuthbert Sunday night. "I'm just trying to wrap my head around it, and understand the magnitude, but it's so freakish", she said from her L.A. home on Tuesday morning.