Sylvie

Also of Modern English usage—as seen on the chart that it's rising in popularity.
https://www.behindthename.com/name/sylvie/top/united-states
https://www.behindthename.com/name/sylvie/top/england-wales

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https://www.names.org/n/sylvie/about
https://www.nancy.cc/baby-name/sylvie/
https://names.darkgreener.com/#sylvie

With 609 176 bearers, Sylvie is the 18th most common feminine given name in France (2014 Data).

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Source: https://forebears.io/forenames/sylvie

Also Czech: https://cs.wikipedia.org/wiki/Silvie --- mentions Sylvie as a variant
https://cs.wikipedia.org/wiki/Sylvia_Kodetov%C3%A1
https://cs.wikipedia.org/wiki/Sylvie_Bodorov%C3%A1
https://cs.wikipedia.org/wiki/Sylvie_Kate%C5%99ina_%C4%8Cern%C3%ADnov%C3%A1_z_Millesima
https://cs.wikipedia.org/wiki/Sylvie_Krobov%C3%A1
https://cs.wikipedia.org/wiki/Sylvie_Richterov%C3%A1 [noted -ed]

The name Sylvie was given to 282 girls born in the US in 2016.
More than 99.9 percent of people with the first name Sylvie are female.

One of my French professors is named Sylvie. She's from Québec, Canada, and has been teaching at LSU for several years. She has published several academic papers about Louisiana French.

The name Sylvie was given to 212 girls born in the US in 2015.

The name Sylvie was given to 169 baby girls born in the US in 2012. I think the French pronunciation is beautiful! Unfortunately, in English speaking countries it would probably be mispronounced as SIL-vee.

Sylvie is 16th place in Czechia Top 1000. There was born 16 little girls.

Sylvie is also the Czech form.