Jessica Simpson, Eric Johnson and Maxwell Drew
07/06/2012 at 11:00 AM EDT
Baby's first Independence Day!
Two-month-old Maxwell Drew
helped America celebrate its 236th birthday Wednesday, alongside parents Jessica Simpson
and Eric Johnson.
In a photo new mom Simpson Tweeted
Thursday night, Maxwell manages to upstage the fireworks display with an adorable – and patriotic! – onesie (but no flowery headband
"Hope everyone had a great 4th!" wrote Simpson, 31, also dressed in an appropriately patriot ensemble.
Since welcoming baby Maxwell, her first child with her fiancé
, May 1, Simpson told PEOPLE "life has completely changed."
"From how I sleep to what I think about," she told PEOPLE in May
, "Maxwell has definitely taken over everything."