Natt also posed for photographers alongside Momsen and his 20-year-old sister Leah., but has been invited to return for guest appearances.
The Pretty Reckless are currently in the midst of a European tour that will see them stop in Barcelona, Madrid and Lisbon this week.
(sic)" The fledgling romance is said to be going well and 23-year-old Natt has even introduced Taylor, 17, to his rock star father Paul - whose hits include 'The Changingman', 'Broken Stones' and 'Wild Wood'.
An insider told the Daily Mirror newspaper: "Natt has taken Taylor to Paul's home to meet his family and friends.
Taylor Momsen and Paul Weller's son Natt have sparked suggestions that they are dating by attending a music festival together.
Momsen's band The Pretty Reckless performed at the Barclaycard Wireless concert series in London's Hyde Park on Sunday and she later took in several other performances in the company of 23â€“year-old Natt.
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They all had a big dinner together." Though it is not known when the meeting took place, Taylor posted a picture on her twitter page of her watching Paul perform at the Hard Rock Calling festival in Hyde Park from the stage last week.
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The group will also take the stage on Saturday at the Oxegen Festival in Punchestown, Ireland.
Taylor Momsen is allegedly dating Paul Weller's son Natt.