Jared Kushner touched down in NYC ready to party with wife Ivanka — and it wasn’t for any low-key get-together … it was for a blowout birthday bash for his brother Joshua.

Check out the pics — Jared and Ivanka were all smiles, hand-in-hand as they rolled into the iconic Katz’s Deli Thursday night, ready to ring in Joshua’s 40th with a bang (and a brisket).

Birthday boy Joshua was all smiles too — arm in arm with his supermodel wife Karlie Kloss, living that high-fashion, high-birthday life.

The star power didn’t stop there — Cindy Crawford rolled through with her lookalike daughter Kaia Gerber, turning Joshua’s birthday bash into a full-blown A-list affair.