EXCLUSIVE: Meghan Markle Has Tightened Security Since Dating Prince Harry, Travels With Guard 'at All Times'

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The 35-year-old actress' life has changed since she started dating a royal.

Meghan Markle is happily dating Prince Harry – but it's not always easy.

The 35-year-old actress has had to tighten her security since beginning her relationship with the 32-year-old royal. A production source on the set of Suits tells ET that Markle has security with her "at all times" on set.

RELATED: Meghan Markle Stuns During Rare Appearance at 'Suits' 100th Episode Party -- See the Pics!

"Meghan used to have a driver like everyone in the cast, which is supplied by the studio, but now she uses her own driver. She has a security guard on set with her at all times," the source says. "She has someone who escorts her to and from home and there is someone with her at all times."

Markle was last spotted at the Suits 100th episode party on Tuesday, celebrating the series' milestone. The source tells ET that everyone at the event was in a celebratory mood and shared that the cast doesn't really chitchat "or mention Harry ever."

"[Markle] spoke about how she grew up going to TV sets with her dad," the source says. "He was a lighting director for Married With Children, and because of that, she has always appreciated the crew, especially on Suits."

The USA drama will wrap for most of August and resume filming in September. In terms of where her character on the show is going, the source says, "Meghan always wanted her character to be more than a sex symbol, someone who pranced around in underwear, or had major sex scenes even before her relationship with Harry started." The source added that last summer "she did have a chat with the creative team and mentioned this to them as well."

FOR RELATED: Meghan Markle Arrives Home in Toronto Following 10-Day Trip Visiting Prince Harry in London

Last week, Markle returned to her residence in Toronto, Canada, after spending 10 days in London, England, with Prince Harry. For now, she is spending time with her mom up North and doesn't have a set date to return to Los Angeles.

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For more on how she spent her time away from home, watch below.

Reporting by Jennifer Peros.