stream interface for logger, C++

I need to implement LoggerStream that does something like this

LoggerStream() << "Logged this info " << " my info with value = " << value;

I have a class Logger with function info.

std::ostringstream msg;
msg << "my info " << " with value = " << value;
logInfo(msg.str());

How to write this wrapper LoggerStream() ?

Thanks!