What was the most heartwarming storyline involving Phoebe on Friends?

Friends is a beloved sitcom that aired for ten seasons, and one of the most endearing characters on the show was Phoebe Buffay. Throughout the series, there were many heartwarming storylines involving Phoebe, but one that stands out is when she becomes a surrogate for her brother Frank and his wife Alice.

Phoebe had always wanted to be a mother, but due to a medical condition, she was unable to carry a child to term. When her brother and his wife were unable to conceive, she offered to be their surrogate. Despite some complications along the way, including Phoebe's attachment to the baby, the storyline ultimately had a happy ending, with Phoebe giving birth to triplets and her brother and his wife becoming parents.