dinner mr chow paris hilton blonde Princess P looked positively glowing with her on-again beau Doug Reinhardt last night at Mr. Chow.

Paris joined Doug's family at the popular eaterie to celebrate his 23rd birthday. The heiress tweeted last night, "Just had a lovely birthday dinner with Doug and his family at Mr. Chow. :)"

B-day dinner with the fam? Things are definitely back on and more serious than ever!