Ali Fedotowsky; Ashley Hebert Ali Fedotowsky; Ashley Hebert

What is the biggest piece of advice previous Bachelorette Ali Fedotowsky has for Ashley Hebert? Make friends!

"Ashley is moving to New York and that could be hard for her because all [J.P.'s] friends are there, his life is there and she needs to blend in," Ali tells "Roberto and I definitely had our moments where we were at each other's throats because ... we only had each other. It's going to be important to not only make friends with his friends, but make her own friends."

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Ali and Roberto became engaged during the Season 6 finale and have since moved to San Diego, but their televised wedding plans recently were postponed.

"Unfortunately I had knee surgery. It was a really hard decision to postpone ... but I want to dance at my wedding, I want to walk down the aisle, I don't want to limp down the aisle," she says.

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Ali also says the decision to have her wedding on television was a "no-brainer." "Roberto and I [said] if the Bachelor producers want to air our wedding, great, we'll do it with them. It will just make it so wonderful and easy."

In the meantime, the former Bachelorette is continuing her on-camera career. She's shooting a pilot for the Style Network. "It's me, Vivica A Fox, Adrianne Curry and Nick Verreos sitting around talking about pop culture and fashion and doing fun segments," she says. "I'm going to be asking a style expert to teach me so I'll be learning along with all the viewers."