How I Met Your Mother: All the plot holes, mistakes, and unanswered questions

[post_page_title]Penny’s age doesn’t add up[/post_page_title]

The first time audiences see Ted’s baby, Penny, is in season 7, episode 20. During this scene, Penny could be aged anywhere between 0 and 3 months. She could even be representing a newborn, as they’re not often brought onto TV sets.

Penny’s age doesn’t add up

Next, in season 8, episode 9, Penny is much older. It was the episode that Lily and Marshall babysat little Penny and took her to see Santa Claus for the first time. This then confuses things a little later.

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