Little Luca is growing fast!

Hilary Duff took to her Twitter account Sunday to show off her favorite part of motherhood: her 2-month-old son!

"Me and my beautiful boy! So much to be thankful for!" she posted along with the pic above. On March 20, Duff and her husband Mike Comrie welcomed baby Luca Cruz into the world.

In addition to a mini photo shoot with her son, the first-time mom was also sent for some much-deserved pampering.

"Just got treated to an amazing long overdue massage! Mothers day is starting early for this girl!" Duff, 24, tweeted Sunday morning.

Earlier this month, the new parents stepped out for a date night where they saw Coldplay perform at the Hollywood Bowl.

"So nice to have a night out but we miss monkey!!" she tweeted post-concert.

Since giving birth, the actress has been hitting the gym hard, frequenting SoulCycle, and participating in Johnson's Baby Cares campaign in support of Save the Children. Now that she has joined the moms club, she has been loving every moment she can spend with her son.

"Babies smell soo good!! I can't get enough. Poor guy gets loved on so much.... I wonder if he ever feels like ‘yo mom, dad give me some space!’" she tweeted last week.