“It’s amazing. Congratulations,” Hudson told PEOPLE at Monday night’s Manhattan premiere of Bride Wars, where she shared the Tiffany & Co. blue carpet with costar Anne Hathaway.
Hudson, 29, got cozy with the seven-time Tour De France champion over this past summer. Armstrong, 37, has three children with his ex-wife Kristin: Luke, 9, and twin daughters Isabella and Grace, 7.
“He’s a great father. He already is an amazing father,” Hudson said with a smile.
– Laura Hahn